1
|
Hachem LD, Zhu M, Aarabi B, Davies B, DiGiorgio A, Evaniew N, Fehlings MG, Ganau M, Graves D, Guest J, Ha Y, Harrop J, Hofstetter C, Koljonen P, Kurpad S, Marco R, Martin AR, Nagoshi N, Nouri A, Rahimi-Movaghar V, Rodrigues-Pinto R, ter Wengel V, Tetreault L, Kwon B, Wilson JR. A Practical Classification System for Acute Cervical Spinal Cord Injury Based on a Three-Phased Modified Delphi Process From the AOSpine Spinal Cord Injury Knowledge Forum. Global Spine J 2024; 14:535-545. [PMID: 36065656 PMCID: PMC10802531 DOI: 10.1177/21925682221114800] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
STUDY DESIGN A modified Delphi study. OBJECTIVE To assess current practice patterns in the management of cervical spinal cord injury (SCI) and develop a simplified, practical classification system which offers ease of use in the acute setting, incorporates modern diagnostic tools and provides utility in determining treatment strategies for cervical SCI. METHODS A three-phase modified Delphi procedure was performed between April 2020 and December 2021. During the first phase, members of the AOSpine SCI Knowledge forum proposed variables of importance for classifying and treating cervical SCI. The second phase involved an international survey of spine surgeons gauging practices surrounding the role and timing of surgery for cervical SCI and opinions regarding factors which most influence these practices. For the third phase, information obtained from phases 1 and 2 were used to draft a new classification system. RESULTS 396 surgeons responded to the survey. Neurological status, spinal stability and cord compression were the most important variables influencing decisions surrounding the role and timing of surgery. The majority (>50%) of respondents preferred to perform surgery within 24 hours post-SCI in clinical scenarios in which there was instability, severe cord compression or severe neurology. Situations in which <50% of respondents were inclined to operate early included: SCI with mild neurological impairments, with cord compression but without instability (with or without medical comorbidities), and SCI without cord compression or instability. CONCLUSIONS Spinal stability, cord compression and neurological status are the most important variables influencing surgeons' practices surrounding the surgical management of cervical SCI. Based on these results, a simplified classification system for acute cervical SCI has been proposed.
Collapse
Affiliation(s)
| | - Mary Zhu
- University of Toronto, Toronto, ON, Canada
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland Medical System, Baltimore, MD, USA
| | - Benjamin Davies
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge UK
| | | | - Nathan Evaniew
- Department of Surgery, University of Calgary, Calgary, AB, USA
| | | | - Mario Ganau
- Department of Neurosurgery, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | | | - James Guest
- Department of Neurosurgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Yoon Ha
- Yonsei University, Seodaemun-gu, Korea
| | - James Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | | | - Paul Koljonen
- Department of Orthopaedics and Traumatology, University of Hong Kong, Hong Kong
| | - Shekar Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Rex Marco
- Houston Methodist Orthopedics & Sports Medicine Texas Medical Center, Houston, TX, USA
| | - Allan R Martin
- Department of Neurological Surgery, University of California Davis, Sacramento, CA, USA
| | - Narihito Nagoshi
- Department of Orthopaedics, Keio University School of Medicine Graduate School of Medicine, Tokyo, Japan
| | - Aria Nouri
- Department of Neurosurgery, Hopitaux Universitaires de Geneve, Genève, Switzerland
| | | | | | - Valerie ter Wengel
- Department of Neurosurgery, Amsterdam UMC VUMC Site, Amsterdam, Netherlands
| | | | - Brian Kwon
- Department of Orthopaedics, The University of British Columbia, Vancouver, BC, USA
| | | |
Collapse
|
2
|
Kwon BK, Tetreault LA, Martin AR, Arnold PM, Marco RAW, Newcombe VFJ, Zipser CM, McKenna SL, Korupolu R, Neal CJ, Saigal R, Glass NE, Douglas S, Ganau M, Rahimi-Movaghar V, Harrop JS, Aarabi B, Wilson JR, Evaniew N, Skelly AC, Fehlings MG. A Clinical Practice Guideline for the Management of Patients With Acute Spinal Cord Injury: Recommendations on Hemodynamic Management. Global Spine J 2024; 14:187S-211S. [PMID: 38526923 DOI: 10.1177/21925682231202348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/27/2024] Open
Abstract
STUDY DESIGN Clinical practice guideline development following the GRADE process. OBJECTIVES Hemodynamic management is one of the only available treatment options that likely improves neurologic outcomes in patients with acute traumatic spinal cord injury (SCI). Augmenting mean arterial pressure (MAP) aims to improve blood perfusion and oxygen delivery to the injured spinal cord in order to minimize secondary ischemic damage to neural tissue. The objective of this guideline was to update the 2013 AANS/CNS recommendations on the hemodynamic management of patients with acute traumatic SCI, acknowledging that much has been published in this area since its publication. Specifically, we sought to make recommendations on 1. The range of mean arterial pressure (MAP) to be maintained by identifying an upper and lower MAP limit; 2. The duration of such MAP augmentation; and 3. The choice of vasopressor. Additionally, we sought to make a recommendation on spinal cord perfusion pressure (SCPP) targets. METHODS A multidisciplinary guideline development group (GDG) was formed that included health care professionals from a wide range of clinical specialities, patient advocates, and individuals living with SCI. The GDG reviewed the 2013 AANS/CNS guidelines and voted on whether each recommendation should be endorsed or updated. A systematic review of the literature, following PRISMA standards and registered in PROSPERO, was conducted to inform the guideline development process and address the following key questions: (i) what are the effects of goal-directed interventions to optimize spinal cord perfusion on extent of neurological recovery and rates of adverse events at any time point of follow-up? and (ii) what are the effects of particular monitoring techniques, perfusion ranges, pharmacological agents, and durations of treatment on extent of neurological recovery and rates of adverse events at any time point of follow-up? The GDG combined the information from this systematic review with their clinical expertise in order to develop recommendations on a MAP target range (specifically an upper and lower limit to target), the optimal duration for MAP augmentation, and the use of vasopressors or inotropes. Using methods outlined by the GRADE working group, recommendations were formulated that considered the balance of benefits and harms, financial impact, acceptability, feasibility and patient preferences. RESULTS The GDG suggested that MAP should be augmented to at least 75-80 mmHg as the "lower limit," but not actively augmented beyond an "upper limit" of 90-95 mmHg in order to optimize spinal cord perfusion in acute traumatic SCI. The quality of the evidence around the "target MAP" was very low, and thus the strength of this recommendation is weak. For duration of hemodynamic management, the GDG "suggested" that MAP be augmented for a duration of 3-7 days. Again, the quality of the evidence around the duration of MAP support was very low, and thus the strength of this recommendation is also weak. The GDG felt that a recommendation on the choice of vasopressor or the use of SCPP targets was not warranted, given the dearth of available evidence. CONCLUSION We provide new recommendations for blood pressure management after acute SCI that acknowledge the limitations of the current evidence on the relationship between MAP and neurologic recovery. It was felt that the low quality of existing evidence and uncertainty around the relationship between MAP and neurologic recovery justified a greater range of MAP to target, and for a broader range of days post-injury than recommended in previous guidelines. While important knowledge gaps still remain regarding hemodynamic management, these recommendations represent current perspectives on the role of MAP augmentation for acute SCI.
Collapse
Affiliation(s)
- Brian K Kwon
- Department of Orthopaedics, University of British Columbia, Vancouver, BC, Canada
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, BC, Canada
| | | | - Allan R Martin
- Department of Neurological Surgery, University of California, Davis, CA, USA
| | - Paul M Arnold
- Department of Neurosurgery, University of Illinois Champaign-Urbana, Urbana, IL, USA
| | - Rex A W Marco
- Department of Orthopedic Surgery, Houston Methodist Hospital, Houston, TX, USA
| | - Virginia F J Newcombe
- University Division of Anaesthesia and PACE, Department of Medicine, University of Cambridge, Cambridge, UK
| | - Carl M Zipser
- Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland
| | | | - Radha Korupolu
- Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center, Houston, TX, USA
| | - Chris J Neal
- Department of Surgery, Uniformed Services University, Bethesda, MD, USA
| | - Rajiv Saigal
- Department of Neurological Surgery, University of Washington, Seattle, WA, USA
| | - Nina E Glass
- Department of Surgery, Rutgers, New Jersey Medical School, University Hospital, Newark, NJ
| | - Sam Douglas
- Praxis Spinal Cord Institute, Vancouver, BC, Canada
| | - Mario Ganau
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
- Department of Neurosurgery, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Vafa Rahimi-Movaghar
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - James S Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Jefferson R Wilson
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Nathan Evaniew
- McCaig Institute for Bone and Joint Health, Department of Surgery, Orthopaedic Surgery, Cumming School of Medicine, University of Calgary, AB, Canada
| | | | - Michael G Fehlings
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, ON, Canada
- Division of Neurosurgery, Krembil Neuroscience Centre, Toronto Western Hospital, University Health Network, Toronto, ON, Canada
| |
Collapse
|
3
|
Fehlings MG, Tetreault LA, Hachem L, Evaniew N, Ganau M, McKenna SL, Neal CJ, Nagoshi N, Rahimi-Movaghar V, Aarabi B, Hofstetter CP, Wengel VT, Nakashima H, Martin AR, Kirshblum S, Rodrigues Pinto R, Marco RAW, Wilson JR, Kahn DE, Newcombe VFJ, Zipser CM, Douglas S, Kurpad SN, Lu Y, Saigal R, Samadani U, Arnold PM, Hawryluk GWJ, Skelly AC, Kwon BK. An Update of a Clinical Practice Guideline for the Management of Patients With Acute Spinal Cord Injury: Recommendations on the Role and Timing of Decompressive Surgery. Global Spine J 2024; 14:174S-186S. [PMID: 38526922 DOI: 10.1177/21925682231181883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/27/2024] Open
Abstract
STUDY DESIGN Clinical practice guideline development. OBJECTIVES Acute spinal cord injury (SCI) can result in devastating motor, sensory, and autonomic impairment; loss of independence; and reduced quality of life. Preclinical evidence suggests that early decompression of the spinal cord may help to limit secondary injury, reduce damage to the neural tissue, and improve functional outcomes. Emerging evidence indicates that "early" surgical decompression completed within 24 hours of injury also improves neurological recovery in patients with acute SCI. The objective of this clinical practice guideline (CPG) is to update the 2017 recommendations on the timing of surgical decompression and to evaluate the evidence with respect to ultra-early surgery (in particular, but not limited to, <12 hours after acute SCI). METHODS A multidisciplinary, international, guideline development group (GDG) was formed that consisted of spine surgeons, neurologists, critical care specialists, emergency medicine doctors, physical medicine and rehabilitation professionals, as well as individuals living with SCI. A systematic review was conducted based on accepted methodological standards to evaluate the impact of early (within 24 hours of acute SCI) or ultra-early (in particular, but not limited to, within 12 hours of acute SCI) surgery on neurological recovery, functional outcomes, administrative outcomes, safety, and cost-effectiveness. The GRADE approach was used to rate the overall strength of evidence across studies for each primary outcome. Using the "evidence-to-recommendation" framework, recommendations were then developed that considered the balance of benefits and harms, financial impact, patient values, acceptability, and feasibility. The guideline was internally appraised using the Appraisal of Guidelines for Research and Evaluation (AGREE) II tool. RESULTS The GDG recommended that early surgery (≤24 hours after injury) be offered as the preferred option for adult patients with acute SCI regardless of level. This recommendation was based on moderate evidence suggesting that patients were 2 times more likely to recover by ≥ 2 ASIA Impairment Score (AIS) grades at 6 months (RR: 2.76, 95% CI 1.60 to 4.98) and 12 months (RR: 1.95, 95% CI 1.26 to 3.18) if they were decompressed within 24 hours compared to after 24 hours. Furthermore, patients undergoing early surgery improved by an additional 4.50 (95% 1.70 to 7.29) points on the ASIA Motor Score compared to patients undergoing surgery after 24 hours post-injury. The GDG also agreed that a recommendation for ultra-early surgery could not be made on the basis of the current evidence because of the small sample sizes, variable definitions of what constituted ultra-early in the literature, and the inconsistency of the evidence. CONCLUSIONS It is recommended that patients with an acute SCI, regardless of level, undergo surgery within 24 hours after injury when medically feasible. Future research is required to determine the differential effectiveness of early surgery in different subpopulations and the impact of ultra-early surgery on neurological recovery. Moreover, further work is required to define what constitutes effective spinal cord decompression and to individualize care. It is also recognized that a concerted international effort will be required to translate these recommendations into policy.
Collapse
Affiliation(s)
- Michael G Fehlings
- Department of Surgery, Division of Neurosurgery and Spine Program, University of Toronto, Toronto, ON, Canada
- Division of Neurosurgery, Krembil Neuroscience Centre, Toronto Western Hospital, University Health Network, Toronto, ON, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | | | - Laureen Hachem
- Department of Surgery, Division of Neurosurgery and Spine Program, University of Toronto, Toronto, ON, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Nathan Evaniew
- Department of Surgery, Orthopaedic Surgery, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Mario Ganau
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
- Department of Neurosurgery, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | | | - Chris J Neal
- Department of Surgery, Uniformed Services University, Bethesda, MD, USA
| | - Narihito Nagoshi
- Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Vafa Rahimi-Movaghar
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | | | - Valerie Ter Wengel
- Department of Neurosurgery, Amsterdam UMC VUMC Site, Amsterdam, Netherlands
| | - Hiroaki Nakashima
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Allan R Martin
- Department of Neurological Surgery, University of California-Davis, Sacramento, CA, USA
| | - Steven Kirshblum
- Kessler Institute for Rehabilitation, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Ricardo Rodrigues Pinto
- Spinal Unit (UVM), Centro Hospitalar Universitário de Santo António, Hospital CUF Trindade, Porto, Portugal
| | - Rex A W Marco
- Department of Orthopedic Surgery, Houston Methodist Hospital, Houston, TX, USA
| | - Jefferson R Wilson
- Department of Surgery, Division of Neurosurgery and Spine Program, University of Toronto, Toronto, ON, Canada
| | - David E Kahn
- Department of Neurology, NYU Langone Medical Center, New York, NY, USA
| | - Virginia F J Newcombe
- Department of Medicine, University Division of Anaesthesia and PACE, University of Cambridge, Cambridge, UK
| | - Carl M Zipser
- Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland
| | - Sam Douglas
- Praxis Spinal Cord Institute, Vancouver, BC, Canada
| | - Shekar N Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Yi Lu
- Department of Neurosurgery, Harvard Medical School, Brigham and Women's Hospital, Boston, MA, USA
| | - Rajiv Saigal
- Department of Neurological Surgery, University of Washington, Seattle, WA, USA
| | - Uzma Samadani
- Department of Surgery, Minneapolis Veterans Affairs, Minneapolis, MN, USA
| | - Paul M Arnold
- Department of Neurosurgery, University of Illinois Champaign-Urbana, Urbana, IL, USA
| | | | | | - Brian K Kwon
- Department of Orthopaedics, University of British Columbia, Vancouver, BC, Canada
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, BC, Canada
| |
Collapse
|
4
|
Davies BM, Khan DZ, Barzangi K, Ali A, Mowforth OD, Nouri A, Harrop JS, Aarabi B, Rahimi-Movaghar V, Kurpad SN, Guest JD, Tetreault L, Kwon BK, Boerger TF, Rodrigues-Pinto R, Furlan JC, Chen R, Zipser CM, Curt A, Milligan J, Kalsi-Rayn S, Sarewitz E, Sadler I, Widdop S, Fehlings MG, Kotter MR. We Choose to Call it 'Degenerative Cervical Myelopathy': Findings of AO Spine RECODE-DCM, an International and Multi-Stakeholder Partnership to Agree a Standard Unifying Term and Definition for a Disease. Global Spine J 2024; 14:503-512. [PMID: 35769029 PMCID: PMC10802519 DOI: 10.1177/21925682221111780] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
STUDY DESIGN Modified DELPHI Consensus Process. OBJECTIVE To agree a single unifying term and definition. Globally, cervical myelopathy caused by degenerative changes to the spine is known by over 11 different names. This inconsistency contributes to many clinical and research challenges, including a lack of awareness. METHOD AO Spine RECODE-DCM (Research objectives and Common Data Elements Degenerative Cervical Myelopathy). To determine the index term, a longlist of candidate terms and their rationale, was created using a literature review and interviews. This was shared with the community, to select their preferred terms (248 members (58%) including 149 (60%) surgeons, 45 (18%) other healthcare professionals and 54 (22%) People with DCM or their supporters) and finalized using a consensus meeting. To determine a definition, a medical definition framework was created using inductive thematic analysis of selected International Classification of Disease definitions. Separately, stakeholders submitted their suggested definition which also underwent inductive thematic analysis (317 members (76%), 190 (59%) surgeons, 62 (20%) other healthcare professionals and 72 (23%) persons living with DCM or their supporters). Using this definition framework, a working definition was created based on submitted content, and finalized using consensus meetings. RESULTS Degenerative Cervical Myelopathy was selected as the unifying term, defined in short, as a progressive spinal cord injury caused by narrowing of the cervical spinal canal. CONCLUSION A consistent term and definition can support education and research initiatives. This was selected using a structured and iterative methodology, which may serve as an exemplar for others in the future.
Collapse
Affiliation(s)
- Benjamin M. Davies
- Academic Neurosurgery Unit, Department of Clinical Neurosurgery, University of Cambridge, UK
- Myelopathy.org, UK
| | - Danyal Z Khan
- Department of Neurosurgery, Walton Centre, UK
- Wellcome / EPSRC Centre for Interventional and Surgical Sciences, University College London, UK
| | - Kara Barzangi
- Academic Neurosurgery Unit, Department of Clinical Neurosurgery, University of Cambridge, UK
| | - Ahmad Ali
- Department of Neurosurgery, Walton Centre, UK
| | - Oliver D. Mowforth
- Academic Neurosurgery Unit, Department of Clinical Neurosurgery, University of Cambridge, UK
- Myelopathy.org, UK
| | - Aria Nouri
- Department of Neurosurgery, Geneva University Hospital, University of Geneva, Switzerland
| | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Iran
| | - Shekar N Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - James D. Guest
- Department of Neurosurgery and The Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Lindsay Tetreault
- Department of Neurology, New York University Langone Health, New York, NY, USA
| | - Brian K. Kwon
- Department of Orthopaedics, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Timothy F Boerger
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - Ricardo Rodrigues-Pinto
- Spinal Unit (UVM), Department of Orthopaedics, Centro Hospitalar Universitário do Porto - Hospital de Santo António, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Portugal
| | - Julio C. Furlan
- Department of Medicine, Division of Physical Medicine and Rehabilitation, University of Toronto, Toronto, ON, Canada
| | - Robert Chen
- Division of Neurology, University of Toronto, Toronto, ON, Canada
| | | | - Armin Curt
- University Spine Center, Balgrist University Hospital, Switzerland
| | | | | | | | | | | | - Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Mark R.N. Kotter
- Academic Neurosurgery Unit, Department of Clinical Neurosurgery, University of Cambridge, UK
- Myelopathy.org, UK
| |
Collapse
|
5
|
Serra R, Wilhelmy B, Chen C, Oliver JD, Stokum JA, Bodanapally UK, Simard JM, Schwartzbauer G, Aarabi B. Acute Development of Traumatic Intracranial Aneurysms After Civilian Gunshot Wounds to the Head. J Neurotrauma 2024. [PMID: 38308472 DOI: 10.1089/neu.2023.0576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2024] Open
Abstract
In previous studies, the incidence of traumatic intracranial aneurysms (TICAs) after civilian gunshot wound to the head (cGSWH) was ∼3%. Given the use of delayed vessel imaging, we hypothesize that a significant fraction of TICAs is missed on initial non-contrasted scans. This study was designed to characterize acute TICAs using admission computed tomographic angiography (aCTA) in cGSWH. Over the period from 2017 to 2022, 341 patients were admitted to R. Adams Cowley Shock Trauma Center with cGSWH; 136 subjects had aCTA ∼3 (standard deviation [SD] 3.5) h post-injury. Demographics, clinical findings, imaging techniques, endovascular/surgical interventions, and outcomes were analyzed. Mean age was 34.7 (SD 13.1), male:female ratio was 120:16. Average admission Glasgow Coma Scale (GCS) score was 6 (SD 3.9). Entry site was frontal in 41, temporal in 55, parietal in 18, occipital in 6, suboccipital in 9, temporo-parietal in 1, and frontobasal-temporal in 6. Projectiles crossed multiple dural compartments in 76 (55%) patients. 35 TICAs were diagnosed in 28 subject: 24 were located along the middle cerebral artery (MCA), 6 in the anterior cerebral artery (ACA), 3 in the internal carotid artery (ICA), 1 in the posterior cerebral artery (PCA), and 1 in the middle meningeal artery (MMA). Eleven TICAs resolved spontaneously in nine patients. Eight aneurysms were treated by endovascular means, two via combined endovascular/open approaches. Forty-nine patients died, 10 of whom had 15 TICAs. Eighty patients developed intracerebral hematoma s (ICHs). Regression models showed that the presence of an ICH was the main predictor of TICA in cGSWH. Larger ICHs (average 22.3 cc vs. 9.4 cc in patients with and without aneurysms, respectively) in patients with cGSWH suggest hidden TICAs. Nearly 30% of patients had spontaneous resolution within 1 week. When CTA was performed acutely, TICAs were 10 times more frequent in cGSWH than in previous literature, and those patients were more likely to proceed to surgery. Almost one third of patients in this series died from the devastating effects of cGSWH.
Collapse
Affiliation(s)
- Riccardo Serra
- Department of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
| | - Bradley Wilhelmy
- Department of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
| | - Chixiang Chen
- Department of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
- Department of Epidemiology and Public Health, Division of Biostatistics and Bioinformatics, R. Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jeffrey D Oliver
- Department of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
| | - Jesse A Stokum
- Department of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
| | - Uttam K Bodanapally
- Department of Diagnostic Radiology and Nuclear Medicine, R. Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - J Marc Simard
- Department of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
- Department of Physiology, University of Maryland, Baltimore, Maryland, USA
| | - Gary Schwartzbauer
- Department of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
- Program in Trauma, R. Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
- Program in Trauma, R. Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| |
Collapse
|
6
|
Picetti E, Demetriades AK, Catena F, Aarabi B, Abu-Zidan FM, Alves OL, Ansaloni L, Armonda RA, Badenes R, Bala M, Balogh ZJ, Barbanera A, Bertuccio A, Biffl WL, Bouzat P, Buki A, Castano-Leon AM, Cerasti D, Citerio G, Coccolini F, Coimbra R, Coniglio C, Costa F, De Iure F, Depreitere B, Fainardi E, Fehlings MJ, Gabrovsky N, Godoy DA, Gruen P, Gupta D, Hawryluk GWJ, Helbok R, Hossain I, Hutchinson PJ, Iaccarino C, Inaba K, Ivanov M, Kaprovoy S, Kirkpatrick AW, Klein S, Kolias A, Konovalov NA, Lagares A, Lippa L, Loza-Gomez A, Luoto TM, Maas AIR, Maciejczak A, Maier RV, Marklund N, Martin MJ, Melloni I, Mendoza-Lattes S, Meyfroidt G, Munari M, Napolitano LM, Okonkwo DO, Otomo Y, Papadopoulos MC, Petr O, Peul WC, Pudkrong AK, Qasim Z, Rasulo F, Reizinho C, Ringel F, Rizoli S, Rostami E, Rubiano AM, Russo E, Sarwal A, Schwab JM, Servadei F, Sharma D, Sharif S, Shiban E, Shutter L, Stahel PF, Taccone FS, Terpolilli NA, Thomé C, Toth P, Tsitsopoulos PP, Udy A, Vaccaro AR, Varon AJ, Vavilala MS, Younsi A, Zackova M, Zoerle T, Robba C. Early management of adult traumatic spinal cord injury in patients with polytrauma: a consensus and clinical recommendations jointly developed by the World Society of Emergency Surgery (WSES) & the European Association of Neurosurgical Societies (EANS). World J Emerg Surg 2024; 19:4. [PMID: 38238783 PMCID: PMC10795357 DOI: 10.1186/s13017-023-00525-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 11/25/2023] [Indexed: 01/22/2024] Open
Abstract
BACKGROUND The early management of polytrauma patients with traumatic spinal cord injury (tSCI) is a major challenge. Sparse data is available to provide optimal care in this scenario and worldwide variability in clinical practice has been documented in recent studies. METHODS A multidisciplinary consensus panel of physicians selected for their established clinical and scientific expertise in the acute management of tSCI polytrauma patients with different specializations was established. The World Society of Emergency Surgery (WSES) and the European Association of Neurosurgical Societies (EANS) endorsed the consensus, and a modified Delphi approach was adopted. RESULTS A total of 17 statements were proposed and discussed. A consensus was reached generating 17 recommendations (16 strong and 1 weak). CONCLUSIONS This consensus provides practical recommendations to support a clinician's decision making in the management of tSCI polytrauma patients.
Collapse
Affiliation(s)
- Edoardo Picetti
- Department of Anesthesia and Intensive Care, Parma University Hospital, Parma, Italy.
| | - Andreas K Demetriades
- Department of Neurosurgery, Royal Infirmary Edinburgh, Edinburgh, UK
- Leiden University Neurosurgical Centre Holland, HMC-HAGA The Hague & LUMC Leiden, Leiden, The Netherlands
| | - Fausto Catena
- Emergency and Trauma Surgery, Bufalini Hospital, Cesena, Italy
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland, Baltimore, MD, USA
| | - Fikri M Abu-Zidan
- The Research Office, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Oscar L Alves
- Hospital Lusíadas Porto, Centro Hospitalar de Gaia/Espinho, Porto, Portugal
| | - Luca Ansaloni
- Department of Surgery, Pavia University Hospital, Pavia, Italy
| | - Rocco A Armonda
- Department of Neurosurgery, Georgetown University School of Medicine and MedStar Washington Hospital Center, Washington, DC, USA
| | - Rafael Badenes
- Department of Anesthesiology and Surgical-Trauma Intensive Care, Hospital Clínic Universitari de Valencia, University of Valencia, Valencia, Spain
| | - Miklosh Bala
- Department of General Surgery, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Zsolt J Balogh
- Department of Traumatology, John Hunter Hospital, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Andrea Barbanera
- Department of Neurosurgery, SS Antonio e Biagio e Cesare Arrigo Alessandria Hospital, Alessandria, Italy
| | - Alessandro Bertuccio
- Division of Trauma/Acute Care Surgery, Scripps Clinic Medical Group, La Jolla, CA, USA
| | - Walter L Biffl
- Division of Trauma/Acute Care Surgery, Scripps Clinic Medical Group, La Jolla, CA, USA
| | - Pierre Bouzat
- Universite Grenoble Alpes, CHU Grenoble Alpes, Grenoble, France
| | - Andras Buki
- School of Medical Sciences, Örebro University, Örebro, Sweden
| | | | - Davide Cerasti
- Neuroradiology Unit, Parma University Hospital, Parma, Italy
| | - Giuseppe Citerio
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Department of Neuroscience, Fondazione IRCCS San Gerardo Dei Tintori, Monza, Italy
| | - Federico Coccolini
- General, Emergency and Trauma Surgery Department, Pisa University Hospital, Pisa, Italy
| | - Raul Coimbra
- Division of Trauma and Acute Care Surgery, Riverside University Health System Medical Center, Riverside, CA, USA
| | - Carlo Coniglio
- Department of Anesthesia, Intensive Care and Prehospital Emergency, Ospedale Maggiore Carlo Alberto Pizzardi, Bologna, Italy
| | - Francesco Costa
- Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico C. Besta, University of Milan, Milan, Italy
| | - Federico De Iure
- Department of Spine Surgery, Ospedale Maggiore Carlo Alberto Pizzardi, Bologna, Italy
| | - Bart Depreitere
- Department of Neurosurgery, University Hospital KU Leuven, Louvain, Belgium
| | - Enrico Fainardi
- Neuroradiology Unit, Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Michael J Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Krembil Research Institute, Toronto Western Hospital, Toronto, ON, Canada
| | - Nikolay Gabrovsky
- Clinic of Neurosurgery, University Hospital Pirogov, Sofia, Bulgaria
| | | | - Peter Gruen
- Department of Neurological Surgery, University of Southern California, Los Angeles, CA, USA
| | - Deepak Gupta
- Department of Neurosurgery, Neurosciences Centre and JPN Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Gregory W J Hawryluk
- Neurological Institute, Cleveland Clinic, Akron General Hospital, Fairlawn, OH, USA
| | - Raimund Helbok
- Department of Neurology, Johannes Kepler University Linz, Kepler University Hospital, Linz, Austria
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Iftakher Hossain
- Neurocenter, Department of Neurosurgery, Turku University Hospital, Turku, Finland
- Division of Neurosurgery, Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
| | - Peter J Hutchinson
- Division of Neurosurgery, Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
| | - Corrado Iaccarino
- Neurosurgery Unit, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Azienda Ospedaliero-Universitaria di Modena, Modena, Italy
| | - Kenji Inaba
- Division of Acute Care Surgery, Department of Surgery, University of Southern California, Los Angeles, CA, USA
| | - Marcel Ivanov
- Neurosurgery Department, Royal Hallamshire Hospital, Sheffield, UK
| | - Stanislav Kaprovoy
- Department of Spinal and Peripheral Nerve Surgery Burdenko Neurosurgical Center, Moscow, Russia
| | - Andrew W Kirkpatrick
- Departments of Surgery and Critical Care Medicine, Foothills Medical Centre, University of Calgary, Calgary, AB, Canada
| | - Sam Klein
- Department of Neurosurgery, Jessa Hospital, Hasselt, Belgium
- Faculty of Medicine and Life Science, Hasselt University, Hasselt, Belgium
| | - Angelos Kolias
- Division of Neurosurgery, Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
- ANAPLASI Rehabilitation Centre, Athens, Greece
- 1St Neurosurgery Department, Henry Dunant Hospital Center, Athens, Greece
| | - Nikolay A Konovalov
- Department of Spinal and Peripheral Nerve Surgery Burdenko Neurosurgical Center, Moscow, Russia
| | - Alfonso Lagares
- Neurosurgery Department, University Hospital "12 de Octubre", Madrid, Spain
| | - Laura Lippa
- Department of Neurosurgery, Ospedale Niguarda, Milan, Italy
| | - Angelica Loza-Gomez
- Department of Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Teemu M Luoto
- Department of Neurosurgery, Tampere University Hospital and Tampere University, Tampere, Finland
| | - Andrew I R Maas
- Department of Neurosurgery, Antwerp University Hospital, Edegem, Belgium
- Department of Translational Neuroscience, Faculty of Medicine and Health Science, University of Antwerp, Antwerp, Belgium
| | - Andrzej Maciejczak
- Department of Neurosurgery, St Luke Hospital, University of Rzeszow, Tarnow, Poland
| | - Ronald V Maier
- Department of Surgery, University of Washington, Seattle, WA, USA
| | - Niklas Marklund
- Department of Clinical Sciences Lund, Neurosurgery, Lund University, Lund, Sweden
- Department of Neurosurgery, Skåne University Hospital, Lund, Sweden
| | | | - Ilaria Melloni
- Division of Neurosurgery, Department of Neurosciences (DINOGMI), IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | | | - Geert Meyfroidt
- Department and Laboratory of Intensive Care Medicine, University Hospitals Leuven and KU Leuven, Louvain, Belgium
| | - Marina Munari
- Neuro-Intensive Care Unit, University Hospital of Padova, Padua, Italy
| | - Lena M Napolitano
- Department of Surgery, University of Michigan Health System, Ann Arbor, MI, USA
| | - David O Okonkwo
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | | | | | - Ondra Petr
- Department of Neurosurgery, Medical University Innsbruck, Innsbruck, Austria
| | - Wilco C Peul
- Leiden University Neurosurgical Centre Holland, HMC-HAGA The Hague & LUMC Leiden, Leiden, The Netherlands
| | - Aichholz K Pudkrong
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, USA
| | - Zaffer Qasim
- Department of Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Frank Rasulo
- Department of Neuroanesthesia and Neurocritical Care, Spedali Civili University Affiliated Hospital of Brescia, Brescia, Italy
| | - Carla Reizinho
- Departamento de Neurocirurgia, Hospital Egas Moniz, Centro Hospitalar Lisboa Ocidental, Lisbon, Portugal
| | - Florian Ringel
- Department of Neurosurgery, University Hospital Mainz, Mainz, Germany
| | - Sandro Rizoli
- Trauma Surgery Department, Hamad General Hospital, HMC, Doha, Qatar
| | - Elham Rostami
- Section of Neurosurgery, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | | | - Emanuele Russo
- Anesthesia and Intensive Care Unit, AUSL Romagna, M.Bufalini Hospital, Cesena, Italy
| | - Aarti Sarwal
- Department of Neurology, Atrium Wake Forest School of Medicine, Winston Salem, NC, USA
| | - Jan M Schwab
- Belford Center for Spinal Cord Injury and Departments of Neurology and Neuroscience, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | - Franco Servadei
- Humanitas Research Hospital-IRCCS & Humanitas University, Rozzano, Milan, Italy
| | - Deepak Sharma
- Neuroanesthesia & Perioperative Neuroscience, University of Washington, Seattle, WA, USA
| | - Salman Sharif
- Department of Neurosurgery, Liaquat National Hospital, Karachi, Pakistan
| | - Ehab Shiban
- Department of Neurosurgery, University Hospital Augsburg, Augsburg, Germany
| | - Lori Shutter
- Department of Critical Care Medicine, Neurology and Neurosurgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Philip F Stahel
- Department of Surgery, Brody School of Medicine, East Carolina University, Greenville, NC, USA
| | - Fabio S Taccone
- Department of Intensive Care, Hopital Universitaire de Bruxelles (HUB), Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Nicole A Terpolilli
- Department of Neurosurgery, LMU Hospital, Ludwig-Maximilian-University Munich, Munich, Germany
| | - Claudius Thomé
- Department of Neurosurgery, Medical University Innsbruck, Innsbruck, Austria
| | - Peter Toth
- Department of Neurosurgery, Medical School, University of Pecs, Pecs, Hungary
| | - Parmenion P Tsitsopoulos
- Department of Neurosurgery, Hippokration General Hospital, Aristotle University School of Medicine, Thessaloníki, Greece
| | - Andrew Udy
- Department of Intensive Care and Hyperbaric Medicine, The Alfred, Melbourne, VIC, 3004, Australia
| | - Alexander R Vaccaro
- Department of Orthopedic Surgery, Delaware Valley Spinal Cord Injury Center, Rothman Orthopedics, Sidney Kimmel Medical Center of Thomas Jefferson University, Philadelphia, PA, USA
| | - Albert J Varon
- Department of Anesthesiology, Perioperative Medicine, and Pain Management, University of Miami Miller School of Medicine/Ryder Trauma Center, Miami, FL, USA
| | - Monica S Vavilala
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, USA
| | - Alexander Younsi
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Monika Zackova
- Division of Intensive Care and Neurology Unit, Montecatone Rehabilitation Institute, Imola, Italy
| | - Tommaso Zoerle
- Department of Pathophysiology and Transplantation, University of Milan, Department of Anesthesia, Critical Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Chiara Robba
- IRCCS Policlinico San Martino, Dipartimento di Scienze Chirurgiche Diagnostiche e Integrate, Università di Genova, Genoa, Italy
| |
Collapse
|
7
|
Bak AB, Moghaddamjou A, Harrop JS, Aarabi B, Fehlings MG. The Impact of Interhospital Transfer on the Extent of Neurological Recovery in Acute Traumatic Spinal Cord Injury: Analysis of a Prospective Multicenter Data Set in 970 Cases. Neurosurgery 2024; 94:90-98. [PMID: 37607093 DOI: 10.1227/neu.0000000000002642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 06/21/2023] [Indexed: 08/24/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Interhospital transfer from community hospitals to centers specialized in managing traumatically injured individuals can strain patients, healthcare systems, and delay appropriate care. The purpose was to compare long-term neurological outcomes in transferred or directly admitted patients with traumatic spinal cord injury (SCI). METHODS An ambispective cohort study was conducted using prospectively collected data (between 2005 and 2018) from 11 specialized level 1 trauma centers across the United States and Canada. All patients who underwent surgical management for SCI were included and placed into 2 comparison cohorts: (1) direct admission and (2) transfer from intermediate hospital. Outcomes were change in American Spinal Injury Association Impairment Scale grade and its components: upper-extremity motor, lower-extremity motor, pinprick, and light touch scores from baseline (assessed ≤72 hours after injury) to follow-up (12-52 weeks). Nearest-neighbor 1:1 propensity score matching between the transferred and directly admitted cohorts was performed. Paired analysis using McNemar's test and paired Student's t -test was used to determine the extent of the difference in neurological outcomes. RESULTS Nine hundred seventy patients (55.5% male, 55.2 ± 18.9 years) with traumatic SCI were directly admitted to a specialized trauma center (N = 474, 48.9%) or transferred from an intermediate hospital (N = 496, 51.1%). After propensity score matching, 283 pairs were matched. Compared with a matched cohort of transferred patients, American Spinal Injury Association Impairment Scale grade improved more in directly admitted patients (56.2% vs 46.3%, P = .024), as did upper-extremity motor score (13.7 ± 12.8 vs 10.4 ± 11.5, P = .018) and light touch score (22.0 ± 29.7 vs 16.9 ± 26.6, P = .034). CONCLUSION Patients with SCI directly admitted to specialized trauma centers have greater neurological recovery compared with patients transferred from an intermediate hospital. Feasibility of direct admission to a center specialized in the management of acute SCI through implementation of a standardized code program must be further investigated. LEVEL OF EVIDENCE Therapeutic level II.
Collapse
Affiliation(s)
- Alex B Bak
- Temerty Faculty of Medicine, University of Toronto, Toronto , Ontario , Canada
| | - Ali Moghaddamjou
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto , Ontario , Canada
- Krembil Neuroscience Centre, University Health Network, Toronto , Ontario , Canada
| | - James S Harrop
- Department of Neurosurgical and Orthopedic Surgery, Thomas Jefferson University and Jefferson Hospital for Neuroscience, Philadelphia , Pennsylvania , USA
| | - Bizhan Aarabi
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore , Maryland , USA
| | - Michael G Fehlings
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto , Ontario , Canada
- Krembil Neuroscience Centre, University Health Network, Toronto , Ontario , Canada
| |
Collapse
|
8
|
Rujeedawa T, Mowforth OD, Davies BM, Yang C, Nouri A, Francis JJ, Aarabi B, Kwon BK, Harrop J, Wilson JR, Martin AR, Rahimi-Movaghar V, Guest JD, Fehlings MG, Kotter MR. Degenerative Thoracic Myelopathy: A Scoping Review of Epidemiology, Genetics, and Pathogenesis. Global Spine J 2023:21925682231224768. [PMID: 38146739 DOI: 10.1177/21925682231224768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2023] Open
Abstract
STUDY DESIGN Literature Review. OBJECTIVE Myelopathy affecting the thoracic spinal cord can arise secondary to several aetiologies which have similar presentation and management. Consequently, there are many uncertainties in this area, including optimal terminology and definitions. Recent collaborative cervical spinal research has led to the proposal and subsequent community adoption of the name degenerative cervical myelopathy(DCM), which has facilitated the establishment of internationally-agreed research priorities for DCM. We put forward the case for the introduction of the term degenerative thoracic myelopathy(DTM) and degenerative spinal myelopathy(DSM) as an umbrella term for both DCM and DTM. METHODS Following PRISMA guidelines, a systematic literature search was performed to identify degenerative thoracic myelopathy literature in Embase and MEDLINE. RESULTS Conditions encompassed within DTM include thoracic spondylotic myelopathy, ossification of the posterior longitudinal ligament, ossification of the ligamentum flavum, calcification of ligaments, hypertrophy of ligaments, degenerative disc disease, thoracic osteoarthritis, intervertebral disc herniation, and posterior osteophytosis. The classic presentation includes girdle pain, gait disturbance, leg weakness, sensory disturbance, and bladder or bowel dysfunction, often with associated back pain. Surgical management is typically favoured with post-surgical outcomes dependent on many factors, including the causative pathology, and presence of additional stenosis. CONCLUSION The clinical entities encompassed by the term DTM are interrelated, can manifest concurrently, and present similarly. Building on the consensus adoption of DCM in the cervical spine and the recent proposal of degenerative cervical radiculopathy(DCR), extending this common nomenclature framework to the terms degenerative spinal myelopathy and degenerative thoracic myelopathy will help improve recognition and communication.
Collapse
Affiliation(s)
- Tanzil Rujeedawa
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Oliver D Mowforth
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Benjamin M Davies
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Cylene Yang
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Aria Nouri
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Department of Clinical Neurosciences, Geneva University Hospitals, Geneva, Switzerland
| | - Jibin J Francis
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | | | - Brian K Kwon
- Vancouver General Hospital, University of British Columbia, Vancouver, BC, Canada
| | - James Harrop
- Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | | | - Allan R Martin
- Department of Neurosurgery, University of California Davis, Sacramento, CA, USA
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - James D Guest
- Department of Neurosurgery and The Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Michael G Fehlings
- Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Mark R Kotter
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| |
Collapse
|
9
|
Bodanapally UK, Aarabi B, Liang Y, Khalid M, Fleiter TR, Gandhi D. Quantitative DECT of Iodine in Chronic Subdural Hematoma as Surrogate of Membrane Exudation: A Pilot Feasibility Study. J Comput Assist Tomogr 2023; 47:951-958. [PMID: 37948371 DOI: 10.1097/rct.0000000000001501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2023]
Abstract
OBJECTIVE We explore the feasibility to estimate the exudation from chronic subdural hematoma (CSDH) membranes, by using dual-energy computed tomography (DECT) quantification of iodine leak and test if the derived quantitative variables and membrane morphology correlates with hematoma volume, internal architecture (homogeneous, laminar, separated, and trabecular types), and fractional hyperdense hematoma at presentation. METHODS In this retrospective study, consecutive CSDH patients with postcontrast DECT head images from January 2020 and June 2021 were analyzed. Predictor variables derived from DECT were correlated with outcome variables followed by mixed-effects regression analysis. RESULTS The study included 36 patients with 50 observations (mean age, 72.6 years; standard deviation, 11.6 years); 31 were men. Dual-energy CT variables that correlated with hematoma volume were external membrane volume (ρ, 0.37; P = 0.008) and iodine concentration (ρ, -0.29; P = 0.04). Variables that correlated with separated type of hematoma were total iodine leak (median [Q 1 , Q 3 ], 68.3 mg [48.5, 88.9] vs 38.8 mg [15.5, 62.9]; P = 0.001) and iodine leak per unit membrane volume (median [Q 1 , Q 3 ], 16.47 mg/mL [10.19, 20.65] vs 8.68 mg/mL [5.72, 11.41]; P = 0.002). Membrane grade was the only variable that correlated with fractional hyperdense hematoma (ρ, 0.28; P = 0.05). Regression analysis showed total iodine leak as the strongest predictor of separated type hematoma (odds ratio [95% confidence interval], 1.06 per mg [1.01, 1.1]). CONCLUSIONS Dual-energy CT demonstrates iodine leak from CSDH membranes. The variables derived from DECT correlated with hematoma volume, internal architecture, and fractional hyperdense hematoma.
Collapse
Affiliation(s)
| | | | | | - Mazhar Khalid
- Department of Neurology, University of Maryland School of Medicine, Baltimore, MD
| | | | - Dheeraj Gandhi
- From the Department of Diagnostic Radiology and Nuclear Medicine
| |
Collapse
|
10
|
Aarabi B. Commentary: Recurrent Chronic Subdural Hematoma After Burr-Hole Surgery and Postoperative Drainage: A Systematic Review and Meta-Analysis. Oper Neurosurg (Hagerstown) 2023; 25:e121-e123. [PMID: 37427949 DOI: 10.1227/ons.0000000000000823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 05/11/2023] [Indexed: 07/11/2023] Open
Affiliation(s)
- Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| |
Collapse
|
11
|
Kelly-Hedrik M, Abd-El-Barr MM, Aarabi B, Curt A, Howley SP, Harrop JS, Kirshblum S, Neal CJ, Noonan V, Park C, Ugiliweneza B, Tator C, Toups EG, Fehlings MG, Williamson T, Guest JD. Importance of Prospective Registries and Clinical Research Networks in the Evolution of Spinal Cord Injury Care. J Neurotrauma 2023; 40:1834-1848. [PMID: 36576020 DOI: 10.1089/neu.2022.0450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Only 100 years ago, traumatic spinal cord injury (SCI) was commonly lethal. Today, most people who sustain SCI survive with continual efforts to improve their quality of life and neurological outcomes. SCI epidemiology is changing as preventative interventions reduce injuries in younger individuals, and there is an increased incidence of incomplete injuries in aging populations. Early treatment has become more intensive with decompressive surgery and proactive interventions to improve spinal cord perfusion. Accurate data, including specialized outcome measures, are crucial to understanding the impact of epidemiological and treatment trends. Dedicated SCI clinical research and data networks and registries have been established in the United States, Canada, Europe, and several other countries. We review four registry networks: the North American Clinical Trials Network (NACTN) SCI Registry, the National Spinal Cord Injury Model Systems (SCIMS) Database, the Rick Hansen SCI Registry (RHSCIR), and the European Multi-Center Study about Spinal Cord Injury (EMSCI). We compare the registries' focuses, data platforms, advanced analytics use, and impacts. We also describe how registries' data can be combined with electronic health records (EHRs) or shared using federated analysis to protect registrants' identities. These registries have identified changes in epidemiology, recovery patterns, complication incidence, and the impact of practice changes such as early decompression. They've also revealed latent disease-modifying factors, helped develop clinical trial stratification models, and served as matched control groups in clinical trials. Advancing SCI clinical science for personalized medicine requires advanced analytical techniques, including machine learning, counterfactual analysis, and the creation of digital twins. Registries and other data sources help drive innovation in SCI clinical science.
Collapse
Affiliation(s)
| | | | - Bizhan Aarabi
- University of Maryland School of Medicine, Maryland, USA
| | - Armin Curt
- Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland
| | - Susan P Howley
- Christopher & Dana Reeve Foundation, Short Hills, New Jersey, USA
| | - James S Harrop
- Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Steven Kirshblum
- Rutgers New Jersey Medical School, Newark, New Jersey, USA
- Kessler Institute for Rehabilitation, West Orange, New Jersey, USA
- Kessler Foundation, West Orange, New Jersey, USA
| | - Christopher J Neal
- Division of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Vanessa Noonan
- Praxis Spinal Cord Institute, Vancouver, British Columbia, Canada
| | - Christine Park
- Duke University School of Medicine, Durham, North Carolina, USA
| | | | - Charles Tator
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Elizabeth G Toups
- Department of Neurosurgery, Houston Methodist Hospital, Houston, Texas, USA
| | - Michael G Fehlings
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Theresa Williamson
- Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - James D Guest
- Neurological Surgery and The Miami Project to Cure Paralysis, University of Miami, Miami, USA
| |
Collapse
|
12
|
Mansoor Ali D, Sivaganesan A, Neal CJ, Thalheimer S, Ugiliweneza B, Toups EG, Abd-El-Barr M, Jimsheleishvili G, Kurpad SN, Aarabi B, Shaffrey CI, Fehlings MG, Tator CH, Grossman RG, Guest JD, Harrop JS. Bulbocavernosus Reflex Has No Prognostic Features During the Acute Evaluation of Spinal Cord Injuries. J Neurotrauma 2023; 40:1970-1975. [PMID: 36884291 DOI: 10.1089/neu.2022.0412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
The bulbocavernosus reflex (BCR) has been used during the initial evaluation of a spinal cord injury patient as a metric to determine prognosis and whether the patient is in "spinal shock." This reflex has been less utilized over the last decade, and therefore a review was performed to assess the value of BCR in patient prognosis. The North American Clinical Trials Network (NACTN) for Spinal Cord Injury (SCI) is a consortium of tertiary medical centers that includes a prospective SCI registry. The NACTN registry data was analyzed to evaluate the prognostic implication of the BCR during the initial evaluation of a spinal cord injury patient. SCI patients were divided into those with an intact or absent BCR during their initial evaluation. Associations of participants' descriptors and neurological status on follow-up were performed, followed by associations with the presence of a BCR. A total of 769 registry patients with recorded BCRs were included in the study. The median age was 49 years (32-61 years), and the majority were male (n = 566, 77%) and white (n = 519, 73%). Among included patients, high blood pressure was the most common comorbidity (n = 230, 31%). Cervical spinal cord injury was the most common (n = 470, 76%) with fall (n = 320, 43%) being the most frequent mechanism of injury. BCR was present in 311 patients (40.4%), while 458 (59.6%) had a negative BCR within 7 days of injury or before surgery. At 6 months post-injury, 230 patients (29.9%) followed up, of which 145 had a positive BCR, while 85 had a negative BCR. The presence/absence of BCR was significantly different in patients with cervical (p = 0.0015) or thoracic SCI (p = 0.0089), or conus medullaris syndrome (p = 0.0035), and in those who were American Spinal Injury Association Impairment Scale grade A (p = 0.0313). No significant relationship was observed between BCR results and demographics, AIS grade conversion, motor score changes (p = 0.1669), and changes in pin prick (p = 0.3795) and light touch scores (p = 0.8178). In addition, cohorts were not different in surgery decision (p = 0.7762) and injury to surgery time (p = 0.0681). In our review of the NACTN spinal cord registry, the BCR did not provide prognostic utility in the acute evaluation of spinal cord injury patients. Therefore, it should not be used as a reliable marker for predicting neurological outcomes post-injury.
Collapse
Affiliation(s)
| | | | - Chris J Neal
- Division of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Sara Thalheimer
- Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | | | - Elizabeth G Toups
- Department of Neurosurgery, Houston Methodist Hospital, Houston, Texas, USA
| | | | | | - Shekar N Kurpad
- Neuroscience Institute, the Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Bizhan Aarabi
- University of Maryland School of Medicine, Baltimore, Maryland, USA
| | | | - Michael G Fehlings
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Charles H Tator
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Robert G Grossman
- Department of Neurosurgery, Houston Methodist Hospital, Houston, Texas, USA
| | - James D Guest
- The Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| | - James S Harrop
- Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| |
Collapse
|
13
|
Futch BG, Kouam RW, Ugiliweneza B, Harrop J, Kurpad S, Foster N, Than K, Crutcher C, Goodwin CR, Tator C, Shaffrey CI, Aarabi B, Fehlings M, Neal CJ, Guest J, Abd-El-Barr MM. Demographics, Mechanism of Injury, and Outcomes for Acute Upper and Lower Cervical Spinal Cord Injuries: An Analysis of 470 Patients in the Prospective, Multi-Center, North American Clinical Trials Network Registry. J Neurotrauma 2023; 40:1918-1927. [PMID: 36852492 DOI: 10.1089/neu.2022.0407] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023] Open
Abstract
There is a paucity of data comparing the demographics, mechanism of injury, and outcomes of upper versus lower cervical spinal cord injuries (cSCI). The study objective was to define different clinical manifestations of cSCI. Data were collected prospectively through centers of the North American Clinical Trials Network (NACTN). Data was collected on 470 patients (21% women, mean age 50 years). Cervical vertebral level was analyzed as an ordinal variable to determine a natural demarcation to classify upper versus lower cSCI. For continuous variable analysis, falls were associated with C3 more than C4 vertebral level injuries (60% vs. 42%; p = 0.0126), while motor vehicle accidents were associated with C4 more than C3 (40% vs. 29%; p = 0.0962). Motor International Standards for Neurological Classification of Spinal Cord Injury scores also demonstrated a natural demarcation between C3 and C4, with C3 having higher median American Spinal Injury Association (ASIA) motor scores (40 [4-73] vs. 11 [3-59], p = 0.0227). There were no differences when comparing C2 to C3 nor C4 to C5. Given the significant differences seen between C3 and C4, but not C2 and C3 nor C4 and C5, upper cSCI was designated as C1-C3, and lower cSCI was designated as C4-C7. Compared with a lower cSCI, patients with an upper cSCI were more likely to have a fall as their mechanism of injury (54% vs. 36%; p = 0.0072). Patients with an ASIA C cSCI were likely to have an upper cervical injury: 23% vs. 11% (p = 0.0226). Additionally, patients with an upper cSCI were more likely to have diabetes prior to injury: 37% versus 22%, respectively (p = 0.0084). Lower cSCI were more likely injured through sports (19% vs. 8%, p = 0.0171) and present with ASIA A (42% vs. 25%, p = 0.0186) neurological grade. Patients with lower cSCI were also significantly more likely to have complications such as shock, pulmonary embolism, and pleural effusion. In conclusion, there appears to be a natural demarcation of injury type between C3 and C4. Upper cSCI (C1-C3) was more associated with falls and diabetes, whereas lower cSCI (C4-C7) was more associated with sports, worse ASIA scores, and more complications. Further research will be needed to understand the mechanistic and biological differences between these two groups and whether different treatments may be appropriate for each of these groups.
Collapse
Affiliation(s)
| | - Romaric Waguia Kouam
- Campbell University School of Osteopathic Medicine, Lillington, North Carolina, USA
| | - Beatrice Ugiliweneza
- Kentucky Spinal Cord Injury Research Center, Louisville, Kentucky, USA
- Department of Neurosurgery, School of Medicine, University of Louisville, Louisville, Kentucky, USA
| | - James Harrop
- Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Shekar Kurpad
- Neuroscience Institute. The Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Norah Foster
- Department of Orthopedic Surgery, Premier Health, Centerville Ohio, USA
| | - Khoi Than
- Department of Neurosurgery, Duke University, Durham, North Carolina, USA
| | - Clifford Crutcher
- Department of Neurosurgery, Duke University, Durham, North Carolina, USA
| | - C Rory Goodwin
- Department of Neurosurgery, Duke University, Durham, North Carolina, USA
| | - Charles Tator
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | | | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Maryland, USA
| | - Michael Fehlings
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Chris J Neal
- Division of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - James Guest
- Neurological Surgery and The Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| | | |
Collapse
|
14
|
Hejrati N, Aarabi B, Neal CJ, Ugiliweneza B, Kurpad SN, Shaffrey CI, Guest JD, Toups EG, Harrop JS, Fehlings MG. Trends in the Use of Corticosteroids in the Management of Acute Spinal Cord Injury in North American Clinical Trials Network Sites. J Neurotrauma 2023; 40:1938-1947. [PMID: 36597351 DOI: 10.1089/neu.2022.0409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Immunomodulatory therapeutics represent a potential neuroprotective strategy for the management of acute spinal cord injury (SCI). One of the most intensely debated neuroprotective drugs has been methylprednisolone sodium succinate (MPSS), which was investigated initially for its role in mitigating lipid peroxidation. More recently, the anti-inflammatory/immunomodulatory properties of MPSS have been increasingly appreciated. Over the past two decades, several systematic reviews and clinical practice guidelines related to MPSS use in SCI have been published. The goal of this study was to investigate the temporal changes in the use of steroids at North American Clinical Trials Network (NACTN) centers and to correlate these changes with the evolution in published literature and guidelines. Data on patients enrolled from 2008-2018 in the prospective, multi-center NACTN registry, and in whom information related to the use of steroids was available, were analyzed. Patients were stratified based on whether they received steroids or not. The primary outcome was the change in the rate of steroid use per year between 2008 and 2018. Secondary outcomes included cardiac, gastrointestinal and genitourinary (GIGU), pulmonary, and dermatological complications. We identified 608 patients, of whom 171 (28.1%) were given steroids. In 2008 and 2009, the prevailing paradigm across NACTN centers was in favor of steroid administration and as such 70% (n = 56) of patients received steroids in 2008 and 71.9% (n = 46) in 2009. An abrupt practice reversal was observed in 2010, whereby only 19.7% of patients (n = 14) received steroids, a trend that continued over subsequent years. Increasing literature in the 2000s arguing against the use of steroids culminated in the 2013 CNS/AANS practice guidelines for the management of acute SCI. These guidelines recommended against the use of MPSS for the treatment of those with acute SCI. Over the following years (2013-2018), steroids continued to be an uncommonly used therapeutic option in NACTN centers (range 3.9-16.9%). Patients receiving steroids had significantly higher rates of pulmonary complications (87%, n = 147) compared with those not receiving steroids (73%, n = 265; p = 0.0003). Compared with patients receiving steroids, however, those who did not receive steroids had significantly higher rates of cardiac (40%, [n = 146] versus 23%, [n = 39]; p = 0.0001) and gastrointestinal/genitourinary complications (55%, [n = 189], versus 31%, [n = 52]; p < 0.0001). The 2013 AANS/CNS guidelines and preceding literature appeared to have an impact on dramatically lowering the rates of corticosteroid use for acute SCI in NACTN sites after 2009. Of note, this analysis may not reflect the impact of the 2017 AO Spine Clinical Practice guidelines, which suggested the use of methylprednisolone as a valid practice option for acute SCI, especially for cervical injuries. Enhanced patient involvement in the clinical decision-making process and opportunities to personalize SCI management exist in reference to the use of MPSS in acute SCI.
Collapse
Affiliation(s)
- Nader Hejrati
- Division of Genetics and Development, Krembil Brain Institute, University Health Network, Toronto, Ontario, Canada
- Division of Neurosurgery and Spine Program, Department of Surgery, and University of Toronto, Toronto, Ontario, Canada
| | - Bizhan Aarabi
- University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Chris J Neal
- Division of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | | | - Shekar N Kurpad
- Neuroscience Institute. The Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | | | - James D Guest
- The Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| | - Elizabeth G Toups
- Department of Neurosurgery, Houston Methodist Hospital, Houston Texas, USA
| | - James S Harrop
- Department of Neurological and Orthopedic Surgery, Division of Spine and Peripheral Nerve Surgery, and Delaware Valley SCI Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Michael G Fehlings
- Division of Genetics and Development, Krembil Brain Institute, University Health Network, Toronto, Ontario, Canada
- Division of Neurosurgery and Spine Program, Department of Surgery, and University of Toronto, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
15
|
Chow DSL, Nguyen A, Park J, Wu L, Toups EG, Harrop JS, Guest JD, Schmitt KM, Aarabi B, Fehlings MG, Boakye M, Grossman RG. Riluzole in Spinal Cord Injury Study (RISCIS)-Pharmacokinetic (PK) Sub-Study: An Analysis of Pharmacokinetics, Pharmacodynamics, and Impact on Axonal Degradation of Riluzole in Patients With Traumatic Cervical Spinal Cord Injury Enrolled in the RISCIS Phase III Randomized Controlled Trial. J Neurotrauma 2023; 40:1889-1906. [PMID: 37130044 DOI: 10.1089/neu.2022.0499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023] Open
Abstract
To date, no drug therapy has shown significant efficacy in improving functional outcomes in patients with acute spinal cord injury (SCI). Riluzole is an approved benzothiazole sodium channel blocker to attenuate neurodegeneration in amyotrophic lateral sclerosis (ALS) and is of interest for neuroprotection in SCI. In a Phase I clinical trial (ClinicalTrials.gov Identifier: NCT00876889), riluzole was well tolerated with a 2-week treatment at the dose level approved for ALS and exhibited potential efficacy in patients with SCI. The acute and progressive nature of traumatic SCI and the complexity of secondary injury processes alter the pharmacokinetics (PK) of therapeutics. In the PK sub-study of the multi-center, randomized, placebo-controlled, double-blinded Riluzole in Spinal Cord Injury Study (RISCIS) Phase II/III trial (ClinicalTrials.gov Identifier: NCT01597518), a total of 32 SCI patients were enrolled, and most of our patients were middle-age Caucasian males with head and neck injuries. We studied the PK and pharmacodynamics (PD) of riluzole on motor recovery, measured by International Standards for Neurological Classification of SCI (ISNCSCI) Motor Score at injury and at 3-month and 6-month follow-ups, along with levels of the axonal injury biomarker phosphorylated neurofilament heavy chain (pNF-H), during the 2-week treatment. PK modeling, PK/PD correlations were developed to identify the potential effective exposure of riluzole for intended PD outcomes. The longitudinal impacts of SCI on the PK of riluzole are characterized. A time-varying population PK model of riluzole is established, incorporating time-varying clearance and volume of distribution from combined data of Phase I and Phase II/III trials. With the developed model, a rational, optimal dosing scheme can be designed with time-dependent modification to preserve the required therapeutic exposure of riluzole. The PD of riluzole and the relationship between PK and neurological outcomes of the treatment were established. The time course of efficacy in total motor score improvement (ΔTMS) and pNF-H were monitored. A three-dimensional (3D) PK/PD correlation was established for ΔTMS at 6 months with overall riluzole exposure area under the curve for Day 0-Day14 (AUCD0-D14) and baseline TMS for individual patients. Patients with baseline TMS between 1 and 36 benefited from the optimal exposure range of 16-48 mg*h/mL. The PD models of pNF-H revealed the riluzole efficacy, as treated subjects exhibited a diminished increase in progression of pNF-H, indicative of reduced axonal breakdown. The independent parameter of area between effective curves (ABEC) between the time profiles of pNF-H in placebo and treatment groups was statistically identified as a significant predictor for the treatment effect on the biomarker. A mechanistic clinical outcomes (CO)/PD (pNF-H) model was established, and the proposed structure demonstrated the feasibility of PK/PD/CO correlation model. No appreciable hepatic toxicity was observed with the current riluzole treatment regimen. The development of effective treatment for SCI is challenging. However, the future model-informed and PK-guided drug development and regimen modification can be rationally executed with the optimal dosing regimen design based on the developed 3D PK/PD model. The PK/PD/CO model can serve as a rational guide for future drug development, PKPD model refinement, and extension to other studies in SCI settings.
Collapse
Affiliation(s)
- Diana Shu-Lian Chow
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, USA
| | - Ashley Nguyen
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, USA
- Janssen Pharmaceutical Companies of Johnson & Johnson, Philadelphia, Pennsylvania, USA
| | - Junghwa Park
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, USA
| | - Lei Wu
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, USA
- AbbVie Pharmaceuticals, Chicago, Illinois, USA
| | | | - James Shields Harrop
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - James David Guest
- Department of Neurological Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Karl Michael Schmitt
- Department of Neurosurgery, Health Science Center, University of Texas, Houston, Texas, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
| | - Michael George Fehlings
- Division of Neurosurgery and Spine Program, Toronto Western Hospital, University of Toronto, Ontario, Canada
| | - Maxwell Boakye
- Department of Neurosurgery, University of Louisville, Louisville, Kentucky, USA
| | | |
Collapse
|
16
|
Neal CJ, Ugiliweneza B, Toups EG, Abd-El-Barr M, Jimsheleishvili G, Kurpad SN, Aarabi B, Harrop JS, Shaffrey CI, Fehlings MG, Tator CH, Grossman RG, Guest JD. Variability in Early Surgery for Acute Cervical Spinal Cord Injury Patients: An Opportunity for Enhanced Care Delivery. J Neurotrauma 2023; 40:1907-1917. [PMID: 37125447 DOI: 10.1089/neu.2022.0507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023] Open
Abstract
Data supporting the benefits of early surgical intervention in acute spinal cord injury (SCI) is growing. For early surgery to be accomplished, understanding the causes of variabilities that effect the timing of surgery is needed to achieve this goal. The purpose of this analysis is to determine factors that affect the timing of surgery for acute cervical SCI within the North American Clinical Trials Network (NACTN) for SCI registry. Patients in the NACTN SCI registry from 2005 to 2019 with a cervical SCI, excluding acute traumatic central cord syndrome, were analyzed for time elapsed from injury to arrival to the hospital, and time to surgery. Two categories were defined: 1) Early Arrival with Early Surgery (EAES) commenced within 24 h of injury, and 2) Early Arrival but Delayed Surgery (EADS), with surgery occurring between 24 to 72 h post-injury. Patients' demographic features, initial clinical evaluation, medical comorbidities, neurological status, surgical intervention, complications, and outcome data were correlated with respect to the two arrival groups. Of the 222 acute cervical SCI patients undergoing surgery, 163 (73.4%) were EAES, and 59 (26.6%) were EADS. There was no statistical difference in arrival time between the EAES and EADS groups. There was a statistical difference in the median arrival time to surgery between the EAES group (9 h) compared with the EADS group (31 h; p < 0.05). There was no statistical difference in race, sex, age, mechanism of injury, Acute Physiologic Assessment and Chronic Health Evaluation (APACHE) II scores, or medical comorbidities between the two groups, but the EAES group did present with a significantly lower systolic blood pressure (p < 0.05). EADS patients were more likely to present as an American Spinal Injury Association Impairment Scale (AIS) D than EAES (p < 0.05). Early surgery was statistically more likely to occur if the injury occurred over the weekend (p < 0.05). There were variations in the rates of early surgery between the eight NACTN sites within the study, ranging from 57 to 100%. Of the 114 patients with 6-month outcome data, there was no significant change between the two groups regarding AIS grade change and motor/pin prick/light touch score recovery. A trend towards improved motor scores with early surgery was not statistically significant (p = 0.21). Although there is data that surgery within 24 h of injury improves outcomes and can be performed safely, there remain variations in care outside of clinical trials. In the present study of cervical SCI, NACTN achieved its goal of early surgery in 73.4% of patients from 2005-2019 who arrived within 24 h of their injury. Variability in achieving this goal was related to severity of neurological injury, the day of the week, and the treating NACTN center. Evaluating variations within our network improves understanding of potential systemic limitations and our decision-making process to accomplish the goal of early surgery.
Collapse
Affiliation(s)
- Chris J Neal
- Division of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | | | - Elizabeth G Toups
- Department of Neurosurgery, Houston Methodist Hospital, Houston, Texas, USA
| | | | | | - Shekar N Kurpad
- Neuroscience Institute. the Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Bizhan Aarabi
- University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - James S Harrop
- Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | | | - Michael G Fehlings
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Charles H Tator
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Robert G Grossman
- Department of Neurosurgery, Houston Methodist Hospital, Houston, Texas, USA
| | - James D Guest
- The Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| |
Collapse
|
17
|
Kelly-Hedrick M, Ugiliweneza B, Toups EG, Jimsheleishvili G, Kurpad SN, Aarabi B, Harrop JS, Foster N, Goodwin RC, Shaffrey CI, Fehlings MG, Tator CH, Guest JD, Neal CJ, Abd-El-Barr MM, Williamson T. Interhospital Transfer Delays Care for Spinal Cord Injury Patients: A Report from the North American Clinical Trials Network for Spinal Cord Injury. J Neurotrauma 2023; 40:1928-1937. [PMID: 37014079 DOI: 10.1089/neu.2022.0408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
Abstract The North America Clinical Trials Network (NACTN) for Spinal Cord Injury (SCI) is a consortium of tertiary medical centers that has maintained a prospective SCI registry since 2004, and it has espoused that early surgical intervention is associated with improved outcome. It has previously been shown that initial presentation to a lower acuity center and necessity of transfer to a higher acuity center reduce rates of early surgery. The NACTN database was evaluated to examine the association between interhospital transfer (IHT), early surgery, and outcome, taking into account distance traveled and site of origin for the patient. Data from a 15-year period of the NACTN SCI Registry were analyzed (years 2005-2019). Patients were stratified into transfers directly from the scene to a Level 1 trauma center (NACTN site) versus IHT from a Level 2 or 3 trauma facility. The main outcome was surgery within 24 hours of injury (yes/no), whereas secondary outcomes were length of stay, death, discharge disposition, and 6-month American Spinal Injury Association Impairment Scale (AIS) grade conversion. For the IHT patients, distance traveled for transfer was calculated by measuring the shortest distance between origin and NACTN hospital. Analysis was performed with Brown-Mood test and chi-square tests. Of 724 patients with transfer data, 295 (40%) underwent IHT and 429 (60%) were admitted directly from the scene of injury. Patients who underwent IHT were more likely to have a less severe SCI (AIS D; p = 0.002), have a central cord injury (p = 0.004), and have a fall as their mechanism of injury (p < 0.0001) than those directly admitted to an NACTN center. Of the 634 patients who had surgery, direct admission to an NACTN site was more likely to result in surgery within 24 hours compared with IHT patients (52% vs. 38%) (p < 0.0003). Median IHT distance was 28 miles (interquartile range [IQR] = 13-62 miles). There was no significant difference in death, length of stay, discharge to a rehab facility versus home, or 6-month AIS grade conversion rates between the two groups. Patients who underwent IHT to an NACTN site were less likely to have surgery within 24 hours of injury, compared with those directly admitted to the Level 1 trauma facility. Although there was no difference in mortality rates, length of stay, or 6-month AIS conversion between groups, patients with IHT were more likely be older with a less severe level of injury (AIS D). This study suggests there are barriers to timely recognition of SCI in the field, appropriate admission to a higher level of care after recognition, and challenges related to the management of individuals with less severe SCI.
Collapse
Affiliation(s)
- Margot Kelly-Hedrick
- Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina, USA
| | | | - Elizabeth G Toups
- Department of Neurosurgery, Houston Methodist Hospital, Houston TX, USA
| | | | - Shekar N Kurpad
- Department of Neurosurgery, The Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Bizhan Aarabi
- University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - James S Harrop
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Norah Foster
- Department of Orthopedics, Miami Valley Hospital, Centerville, Ohio, USA
| | - Rory C Goodwin
- Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina, USA
| | - Christopher I Shaffrey
- Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina, USA
| | - Michael G Fehlings
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Charles H Tator
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - James D Guest
- The Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| | - Chris J Neal
- Division of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Muhammad M Abd-El-Barr
- Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina, USA
| | - Theresa Williamson
- Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| |
Collapse
|
18
|
Fehlings MG, Moghaddamjou A, Harrop JS, Stanford R, Ball J, Aarabi B, Freeman BJC, Arnold PM, Guest JD, Kurpad SN, Schuster JM, Nassr A, Schmitt KM, Wilson JR, Brodke DS, Ahmad FU, Yee A, Ray WZ, Brooks NP, Wilson J, Chow DSL, Toups EG, Kopjar B. Safety and Efficacy of Riluzole in Acute Spinal Cord Injury Study (RISCIS): A Multi-Center, Randomized, Placebo-Controlled, Double-Blinded Trial. J Neurotrauma 2023; 40:1878-1888. [PMID: 37279301 PMCID: PMC10460693 DOI: 10.1089/neu.2023.0163] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023] Open
Abstract
Riluzole is a sodium-glutamate antagonist that attenuates neurodegeneration in amyotrophic lateral sclerosis (ALS). It has shown favorable results in promoting recovery in pre-clinical models of traumatic spinal cord injury (tSCI) and in early phase clinical trials. This study aimed to evaluate the efficacy and safety of riluzole in acute cervical tSCI. An international, multi-center, prospective, randomized, double-blinded, placebo-controlled, adaptive, Phase III trial (NCT01597518) was undertaken. Patients with American Spinal Injury Association Impairment Scale (AIS) A-C, cervical (C4-C8) tSCI, and <12 h from injury were randomized to receive either riluzole, at an oral dose of 100 mg twice per day (BID) for the first 24 h followed by 50 mg BID for the following 13 days, or placebo. The primary efficacy end-point was change in Upper Extremity Motor (UEM) scores at 180 days. The primary efficacy analyses were conducted on an intention to treat (ITT) and completed cases (CC) basis. The study was powered at a planned enrolment of 351 patients. The trial began in October 2013 and was halted by the sponsor on May 2020 (and terminated in April 2021) in the face of the global COVID-19 pandemic. One hundred ninety-three patients (54.9% of the pre-planned enrolment) were randomized with a follow-up rate of 82.7% at 180 days. At 180 days, in the CC population the riluzole-treated patients compared with placebo had a mean gain of 1.76 UEM scores (95% confidence interval: -2.54-6.06) and 2.86 total motor scores (CI: -6.79-12.52). No drug-related serious adverse events were associated with the use of riluzole. Additional pre-planned sensitivity analyses revealed that in the AIS C population, riluzole was associated with significant improvement in total motor scores (estimate: standard error [SE] 8.0; CI 1.5-14.4) and upper extremity motor scores (SE 13.8; CI 3.1-24.5) at 6 months. AIS B patients had higher reported independence, measured by the Spinal Cord Independence Measure score (45.3 vs. 27.3; d: 18.0 CI: -1.7-38.0) and change in mental health scores, measured by the Short Form 36 mental health domain (2.01 vs. -11.58; d: 13.2 CI: 1.2-24.8) at 180 days. AIS A patients who received riluzole had a higher average gain in neurological levels at 6 months compared with placebo (mean 0.50 levels gained vs. 0.12 in placebo; d: 0.38, CI: -0.2-0.9). The primary analysis did not achieve the predetermined end-point of efficacy for riluzole, likely related to insufficient power. However, on pre-planned secondary analyses, all subgroups of cervical SCI subjects (AIS grades A, B and C) treated with riluzole showed significant gains in functional recovery. The results of this trial may warrant further investigation to extend these findings. Moreover, guideline development groups may wish to assess the possible clinical relevance of the secondary outcome analyses, in light of the fact that SCI is an uncommon orphan disorder without an accepted neuroprotective treatment.
Collapse
Affiliation(s)
- Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Division of Neurosurgery, Krembil Neuroscience Center, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
| | - Ali Moghaddamjou
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Ralph Stanford
- Neuroscience Research Australia and Prince of Wales Hospital, Sydney, New South Wales, Australia
| | - Jonathon Ball
- Royal North Shore Hospital, St. Leonards, New South Wales, Australia
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Brian J. C. Freeman
- Center for Orthopedic and Trauma Research, Adelaide Medical School, the University of Adelaide, Adelaide, South Australia, Australia
| | - Paul M. Arnold
- Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Champaign, Illinois, USA
| | - James D. Guest
- Department of Neurosurgery and the Miami Project to Cure Paralysis, the Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Shekar N. Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, Wisconsin, USA
| | - James M. Schuster
- Department of Neurosurgery, Pennsylvania Hospital, University of Pennsylvania Health System, Philadelphia, Pennsylvania, USA
| | - Ahmad Nassr
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Karl M. Schmitt
- Department of Neurosurgery, Health Science Center, University of Texas, Houston, Texas, USA
| | - Jefferson R. Wilson
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Darrel S. Brodke
- Department of Orthopedics, University of Utah, Salt Lake City, Utah, USA
| | - Faiz U. Ahmad
- Department of Neurological Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Albert Yee
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Wilson Z. Ray
- Department of Neurosurgery, Washington University, St. Louis, Missouri, USA
| | - Nathaniel P. Brooks
- Department of Neurological Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Jason Wilson
- Department of Neurosurgery and School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA
| | - Diana S-L Chow
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, USA
| | - Elizabeth G. Toups
- Department of Neurosurgery, Houston Methodist Hospital, Houston, Texas, USA
| | - Branko Kopjar
- Department of Health Services, University of Washington, Seattle, Washington, USA
| |
Collapse
|
19
|
Tator CH, Guest JD, Neal CJ, Howley SP, Toups EG, Harrop JS, Aarabi B, Shaffrey CI, Fehlings MG. History and Accomplishments of the North American Clinical Trials Network for Spinal Cord Injury, 2004-2022. J Neurotrauma 2023; 40:1823-1833. [PMID: 36515162 DOI: 10.1089/neu.2022.0404] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
This is a historical account of the origin and accomplishments of the North American Clinical Trials Network (NACTN) for traumatic spinal cord injury (SCI), which was established in 2004 by Christopher Reeve and Robert Grossman. Christopher Reeve was an actor who became quadriplegic and started the Christopher & Dana Reeve Foundation (CDRF), and Robert Grossman was a neurosurgeon experienced in neurotrauma and a university professor in Houston. NACTN has member investigators at university and military centers in North America and has contributed greatly to the improvement of care, primarily acute care, of patients sustaining traumatic SCI. Its accomplishments are a clinical registry database of >1000 acute SCI patients documenting the care pathways, including complications. NACTN has assessed the effectiveness of treatment, including pharmacotherapy and the role and timing of surgery, and has also identified barriers to early surgery. The principal focus has been on improving neurological recovery. NACTN has trained many SCI practitioners and has collaborated with other SCI networks and organizations internationally to promote the care of SCI patients.
Collapse
Affiliation(s)
- Charles H Tator
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - James D Guest
- Neurological Surgery and The Miami Project to Cure Paralysis, University of Miami, Miami, Florida, USA
| | - Chris J Neal
- Division of Neurosurgery, Walter Reed National Military Medical Center, Bethesda Maryland, USA
| | - Susan P Howley
- Christopher & Dana Reeve Foundation, Short Hills, New Jersey, USA
| | - Elizabeth G Toups
- Department of Neurosurgery, Houston Methodist Hospital, Houston Texas, USA
| | - James S Harrop
- Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Bizhan Aarabi
- University of Maryland School of Medicine, Baltimore, Maryland, USA
| | | | - Michael G Fehlings
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
20
|
Davies B, Brannigan J, Mowforth OD, Khan D, McNair AGK, Tetreault L, Sadler I, Sarewitz E, Aarabi B, Kwon B, Gronlund T, Rahimi-Movaghar V, Zipser CM, Hutchinson PJ, Kurpad S, Harrop JS, Wilson JR, Guest JD, Fehlings MG, Kotter MRN. Secondary analysis of a James Lind Alliance priority setting partnership to facilitate knowledge translation in degenerative cervical myelopathy (DCM): insights from AO Spine RECODE-DCM. BMJ Open 2023; 13:e064296. [PMID: 37463815 PMCID: PMC10357680 DOI: 10.1136/bmjopen-2022-064296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/20/2023] Open
Abstract
OBJECTIVES To explore whether a James Lind Alliance Priority Setting Partnership could provide insights on knowledge translation within the field of degenerative cervical myelopathy (DCM). DESIGN Secondary analysis of a James Lind Alliance Priority Setting Partnership process for DCM. PARTICIPANTS AND SETTING DCM stake holders, including spinal surgeons, people with myelopathy and other healthcare professionals, were surveyed internationally. Research suggestions submitted by stakeholders but considered answered were identified. Sampling characteristics of respondents were compared with the overall cohort to identify subgroups underserved by current knowledge translation. RESULTS The survey was completed by 423 individuals from 68 different countries. A total of 22% of participants submitted research suggestions that were considered 'answered'. There was a significant difference between responses from different stakeholder groups (p<0.005). Spinal surgeons were the group which was most likely to submit an 'answered' research question. Respondents from South America were also most likely to submit 'answered' questions, when compared with other regions. However, there was no significant difference between responses from different stakeholder regions (p=0.4). CONCLUSIONS Knowledge translation challenges exist within DCM. This practical approach to measuring knowledge translation may offer a more responsive assessment to guide interventions, complementing existing metrics.
Collapse
Affiliation(s)
- Benjamin Davies
- Department of Clinical Neurosurgery, University of Cambridge, Cambridge, UK
| | - Jamie Brannigan
- School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | - Oliver D Mowforth
- Department of Clinical Neurosurgery, University of Cambridge, Cambridge, UK
| | - Danyal Khan
- Queen Square Institute of Neurology, University College London, London, UK
| | - Angus G K McNair
- Centre for Surgical Research, Bristol Medical School, Population Health Sciences, University of Bristol, Bristol, UK
- Department of General Surgery, North Bristol NHS Trust, Bristol, UK
| | - Lindsay Tetreault
- Department of Medicine, University College Cork, Cork, Ireland
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | | | | | - Bizhan Aarabi
- Division of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
| | - Brian Kwon
- Division of Spine Surgery, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Toto Gronlund
- National Institute for Health Research, University of Southampton, Southampton, UK
| | - Vafa Rahimi-Movaghar
- Academic Department of Neurological Surgery, Sina Trauma and Surgery Research Center, Tehran, Iran (the Islamic Republic of)
| | - Carl Moritz Zipser
- Department of Neurology, University Hospital Balgrist, Zurich, Switzerland
| | | | - Shekar Kurpad
- Division of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - James S Harrop
- Division of Neurosurgery, Thomas Jefferson University Hospital, Jefferson Health System, St Louis, Mississippi, USA
| | - Jefferson R Wilson
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - James D Guest
- Department of Neurosurgery and The Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Michael G Fehlings
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Mark R N Kotter
- Department of Clinical Neurosurgery, University of Cambridge, Cambridge, UK
| |
Collapse
|
21
|
Aarabi B, Neal CJ, Hersh DS, Harrop JS, Fehlings MG, Toups EG, Guest JD, Ugiliweneza B, Akhtar-Danesh N, Kurpad SN, Grossman RG. Mortality in ASIA Impairment Scale grade A to D Patients With Odontoid Fracture and Magnetic Resonance Imaging Evidence of Spinal Cord Injury. Neurotrauma Rep 2023; 4:375-383. [PMID: 37350794 PMCID: PMC10282967 DOI: 10.1089/neur.2023.0005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023] Open
Abstract
Odontoid fractures are common, often presenting in the elderly after a fall and infrequently associated with traumatic spinal cord injury (tSCI). The goal of this study was to analyze predictors of mortality and neurological outcome when odontoid fractures were associated with signal change on magnetic resonance imaging (MRI) at admission. Over an 18-year period (2001-2019), 33 patients with odontoid fractures and documented tSCI on MRI were identified. Mean age was 65.3 years (standard deviation [SD] = 17.2), and 21 patients were male. The mechanism of injury was falls in 25 patients, motor vehicle accidents in 5, and other causes in 3. Mean Injury Severity Score (ISS) was 40.5 (SD = 30.2), Glasgow Coma Scale (GCS) score was 13 (SD = 3.4), and American Spinal Injury Association (ASIA) motor score (AMS) was 51.6 (SD = 42.7). ASIA Impairment Scale (AIS) grade was A, B, C, and D in 9, 2, 3, and 19 patients, respectively. Mean intramedullary lesion length was 32.3 mm (SD = 18.6). The odontoid peg was displaced ventral or dorsal in 15 patients. Twenty patients had surgical intervention: anterior odontoid screw fixation in 7 and posterior spinal fusion in 13. Eleven (33.3%) patients died in this series: withdrawal of medical care in 5; anoxic brain injury in 4; and failure of critical care management in 2. Univariate logistic regression indicated that GCS score (p < 0.014), AMS (p < 0.002), AIS grade (p < 0.002), and ISS (p < 0.009) were risk factors for mortality. Multi-variate regression analysis indicated that only AMS (p < 0.002) had a significant relationship with mortality when odontoid fracture was associated with tSCI (odds ratio, 0.963; 95% confidence interval, 0.941-0.986).
Collapse
Affiliation(s)
- Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Christopher J. Neal
- Department of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - David S. Hersh
- Division of Neurosurgery, Connecticut Children's, Hartford, Connecticut, USA
| | - James S. Harrop
- Department of Neurosurgery, Jefferson Medical College, Philadelphia, Pennsylvania, USA
| | - Michael G. Fehlings
- Division of Neurosurgery and Spine Program, University of Toronto, Toronto, Ontario, Canada
| | - Elizabeth G. Toups
- Department of Neurosurgery, University of Texas, Houston at Methodist Hospital, Houston, Texas, USA
| | - James D. Guest
- Department of Neurological Surgery, the Miami Project to Cure Paralysis, Miami, Florida, USA
| | - Beatrice Ugiliweneza
- Department of Neurosurgery, Kentucky Spinal Cord Injury Research Center, Louisville, Kentucky, USA
| | - Noori Akhtar-Danesh
- School of Nursing and Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Shekar N. Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Robert G. Grossman
- Department of Neurosurgery, University of Texas, Houston at Methodist Hospital, Houston, Texas, USA
| |
Collapse
|
22
|
Aarabi B. Commentary: Middle Meningeal Artery Embolization for Chronic Subdural Hematoma: A Review. Oper Neurosurg (Hagerstown) 2023; 24:e466-e467. [PMID: 37040099 DOI: 10.1227/ons.0000000000000690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Accepted: 01/23/2023] [Indexed: 04/12/2023] Open
Affiliation(s)
- Bizhan Aarabi
- Department of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
| |
Collapse
|
23
|
Mowforth OD, Burn L, Khan DZ, Yang X, Stacpoole SRL, Gronlund T, Tetreault L, Kalsi-Ryan S, Starkey ML, Sadler I, Sarewitz E, Houlton D, Carter J, Howard P, Rahimi-Movaghar V, Guest JD, Aarabi B, Kwon BK, Kurpad SN, Harrop J, Wilson JR, Grossman R, Smith EK, McNair A, Fehlings MG, Kotter MRN, Davies BM. Lived experience-centred word clouds may improve research uncertainty gathering in priority setting partnerships. BMC Med Res Methodol 2023; 23:100. [PMID: 37087419 PMCID: PMC10122197 DOI: 10.1186/s12874-023-01897-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 03/20/2023] [Indexed: 04/24/2023] Open
Abstract
INTRODUCTION AO Spine RECODE-DCM was a multi-stakeholder priority setting partnership (PSP) to define the top ten research priorities for degenerative cervical myelopathy (DCM). Priorities were generated and iteratively refined using a series of surveys administered to surgeons, other healthcare professionals (oHCP) and people with DCM (PwDCM). The aim of this work was to utilise word clouds to enable the perspectives of people with the condition to be heard earlier in the PSP process than is traditionally the case. The objective was to evaluate the added value of word clouds in the process of defining research uncertainties in National Institute for Health Research (NIHR) James Lind Alliance (JLA) Priority Setting Partnerships. METHODS Patient-generated word clouds were created for the four survey subsections of the AO Spine RECODE-DCM PSP: diagnosis, treatment, long-term management and other issues. These were then evaluated as a nested methodological study. Word-clouds were created and iteratively refined by an online support group of people with DCM, before being curated by the RECODE-DCM management committee and expert healthcare professional representatives. The final word clouds were embedded within the surveys administered at random to 50% of participants. DCM research uncertainties suggested by participants were compared pre- and post-word cloud presentation. RESULTS A total of 215 (50.9%) participants were randomised to the word cloud stream, including 118 (55%) spinal surgeons, 52 (24%) PwDCM and 45 (21%) oHCP. Participants submitted 434 additional uncertainties after word cloud review: word count was lower and more uniform across each survey subsections compared to pre-word cloud uncertainties. Twenty-three (32%) of the final 74 PSP summary questions did not have a post-word cloud contribution and no summary question was formed exclusively on post-word cloud uncertainties. There were differences in mapping of pre- and post-word cloud uncertainties to summary questions, with greater mapping of post-word cloud uncertainties to the number 1 research question priority: raising awareness. Five of the final summary questions were more likely to map to the research uncertainties suggested by participants after having reviewed the word clouds. CONCLUSIONS Word clouds may increase the perspective of underrepresented stakeholders in the research question gathering stage of priority setting partnerships. This may help steer the process towards research questions that are of highest priority for people with the condition.
Collapse
Affiliation(s)
- Oliver D Mowforth
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Lance Burn
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Danyal Z Khan
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Xiaoyu Yang
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Sybil R L Stacpoole
- Department of Clinical Neurosciences, North West Anglia NHS Foundation Trust and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Toto Gronlund
- James Lind Alliance, National Institute for Health Research, Southampton, UK
| | - Lindsay Tetreault
- Division of Neurosurgery, University of Toronto, Toronto, ON, Canada
| | | | - Michelle L Starkey
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Iwan Sadler
- Myelopathy.Org, (Registered Charity England and Wales, No 1178673), Cambridge, UK
| | - Ellen Sarewitz
- The Goffin Consultancy, Goffin Consultancy Ltd, Riding House, Stelling Minnis, Bossingham Road, Canterbury, CT4 6AZ, UK
| | - Delphine Houlton
- Myelopathy.Org, (Registered Charity England and Wales, No 1178673), Cambridge, UK
| | - Julia Carter
- Myelopathy.Org, (Registered Charity England and Wales, No 1178673), Cambridge, UK
| | - Paige Howard
- US Person with DCM Representative - CSU, Bakersfield, CA, USA
| | - Vafa Rahimi-Movaghar
- Academic Department of Neurological Surgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - James D Guest
- Department of Neurological Surgery, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Bizhan Aarabi
- Division of Neurosurgery, Shock Trauma, University of Maryland, Baltimore, MD, USA
| | - Brian K Kwon
- Division of Spine Surgery, Vancouver General Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Shekar N Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - James Harrop
- Division of Neurosurgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | | | - Robert Grossman
- Division of Neurosurgery, Houston Methodist Hospital, Houston, TX, USA
| | - Emma K Smith
- School of General Practice, NHS Health Education East of England, London, UK
| | - Angus McNair
- Center for Surgical Research, Bristol Medical School: Population Health Sciences, University of Bristol, Bristol, UK
| | | | - Mark R N Kotter
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Wellcome Trust & MRC Cambridge Stem Cell Institute, Cambridge, UK
| | - Benjamin M Davies
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK.
| |
Collapse
|
24
|
Fehlings MG, Moghaddamjou A, Harrop JS, Stanford R, Ball J, Aarabi B, Freeman B, Guest JD, Kurpad SN, Schuster JM, Nassr A, Schmitt KM, Wilson JR, Brodke DS, Ahmad FU, Yee A, Ray Z, Brooks NP, Wilson J, Kopjar B, Arnold PM. 186 A Multi-Center, Randomized, Placebo-Controlled, Double-Blinded Trial of Efficacy and Safety of Riluzole in Acute Spinal Cord Injury Study (RISCIS). Neurosurgery 2023. [DOI: 10.1227/neu.0000000000002375_186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
|
25
|
Aarabi B, Amirjamshidi A, Taghipour M, Haghnegahdar A, Farrokhi MR, Kamgarpour A, Alibai E, Safdari M, Abbassioun K, Panahi S, Moein H, Birjandi A, Salehpour F, Tabatabaeifar M. Letter to the Editor: Military Traumatic Brain Injury. J Neurotrauma 2023; 40:592-594. [PMID: 36576987 DOI: 10.1089/neu.2022.0381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA.,R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Abbas Amirjamshidi
- Department of Neurosurgery, Tehran University of Medical Sciences, Tehran, Iran
| | - Musa Taghipour
- Department of Neurosurgery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Haghnegahdar
- Department of Neurosurgery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Majid Reza Farrokhi
- Department of Neurosurgery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Kamgarpour
- Department of Neurosurgery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ehsanali Alibai
- Department of Neurosurgery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Safdari
- Division of Neurosurgery, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Kazem Abbassioun
- Department of Neurosurgery, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeid Panahi
- Department of Neurosurgery, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hooshang Moein
- Department of Neurosurgery, Esfahan University of Medical Sciences, Esfahan, Iran
| | - Alireza Birjandi
- Department of Neurosurgery, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Firooz Salehpour
- Department of Neurosurgery, Tabriz University of Medical Sciences, Tabriz, Iran
| | | |
Collapse
|
26
|
Chryssikos T, Stokum JA, Ahmed AK, Chen C, Wessell A, Cannarsa G, Caffes N, Oliver J, Olexa J, Shea P, Labib M, Woodworth G, Ksendzovsky A, Bodanapally U, Crandall K, Sansur C, Schwartzbauer G, Aarabi B. Surgical Decompression of Traumatic Cervical Spinal Cord Injury: A Pilot Study Comparing Real-Time Intraoperative Ultrasound After Laminectomy With Postoperative MRI and CT Myelography. Neurosurgery 2023; 92:353-362. [PMID: 36637270 PMCID: PMC9815093 DOI: 10.1227/neu.0000000000002207] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 08/30/2022] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Decompression of the injured spinal cord confers neuroprotection. Compared with timing of surgery, verification of surgical decompression is understudied. OBJECTIVE To compare the judgment of cervical spinal cord decompression using real-time intraoperative ultrasound (IOUS) following laminectomy with postoperative MRI and CT myelography. METHODS Fifty-one patients were retrospectively reviewed. Completeness of decompression was evaluated by real-time IOUS and compared with postoperative MRI (47 cases) and CT myelography (4 cases). RESULTS Five cases (9.8%) underwent additional laminectomy after initial IOUS evaluation to yield a final judgment of adequate decompression using IOUS in all 51 cases (100%). Postoperative MRI/CT myelography showed adequate decompression in 43 cases (84.31%). Six cases had insufficient bony decompression, of which 3 (50%) had cerebrospinal fluid effacement at >1 level. Two cases had severe circumferential intradural swelling despite adequate bony decompression. Between groups with and without adequate decompression on postoperative MRI/CT myelography, there were significant differences for American Spinal Injury Association motor score, American Spinal Injury Association Impairment Scale grade, AO Spine injury morphology, and intramedullary lesion length (IMLL). Multivariate analysis using stepwise variable selection and logistic regression showed that preoperative IMLL was the most significant predictor of inadequate decompression on postoperative imaging (P = .024). CONCLUSION Patients with severe clinical injury and large IMLL were more likely to have inadequate decompression on postoperative MRI/CT myelography. IOUS can serve as a supplement to postoperative MRI/CT myelography for the assessment of spinal cord decompression. However, further investigation, additional surgeon experience, and anticipation of prolonged swelling after surgery are required.
Collapse
Affiliation(s)
- Timothy Chryssikos
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jesse A. Stokum
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Abdul-Kareem Ahmed
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Chixiang Chen
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Epidemiology and Public Health, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Aaron Wessell
- Department of Neurosurgery, Mayo Clinic Florida, Jacksonville, Florida, USA
| | - Gregory Cannarsa
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Nicholas Caffes
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jeffrey Oliver
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Joshua Olexa
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Phelan Shea
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Mohamed Labib
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Graeme Woodworth
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Alexander Ksendzovsky
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Uttam Bodanapally
- Department of Radiology and Nuclear Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Kenneth Crandall
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Charles Sansur
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Gary Schwartzbauer
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Program in Trauma, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Program in Trauma, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| |
Collapse
|
27
|
Bodanapally UK, Fleiter TR, Aarabi B, Malhotra A, Gandhi D. Dual-energy CT imaging of chronic subdural hematoma membranes: technical note. Eur Radiol 2023; 33:797-802. [PMID: 35999369 DOI: 10.1007/s00330-022-09064-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/28/2022] [Accepted: 07/23/2022] [Indexed: 02/03/2023]
Abstract
This technical note describes a novel dual-energy CT (DECT) protocol with iodine map reconstruction that will enable visualization of chronic subdural hematoma (CSDH) membranes. We describe the technique and discuss the potential implications for surgical management. The cohort included 36 patients with 50 hematomas. Enhancing external membrane was demonstrated in all the 50 hematomas, incomplete internal membrane in 13, and complete internal membrane in 23 hematomas. A spandrel sign at the transition zone that indicates partial or complete formation of internal membrane was demonstrated in 36 hematomas. KEY POINTS: • Iodine maps from 5-min delayed post-contrast DECT provide spectral contrast difference and facilitate segregation of chronic subdural hematoma membranes. • The ability to image the membranes helps in assessing the degree of organization of the hematoma by providing the information about the membrane thickness, volume, complexity of the membranes, and the proportion of the liquefied component within the hematoma before surgical procedures are undertaken. • Membrane visualization helps in the localization of the transition zone and extension of the membranes over the cerebral lobes helping in the determination of craniotomy location and size, during membranectomy.
Collapse
Affiliation(s)
- Uttam K Bodanapally
- Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, University of Maryland Medical Center, 22 S. Greene Street, Baltimore, MD, 21201, USA.
| | - Thorsten R Fleiter
- Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, University of Maryland Medical Center, 22 S. Greene Street, Baltimore, MD, 21201, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, 22 S. Greene Street, Baltimore, MD, USA
| | - Ajay Malhotra
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, CT, USA
| | - Dheeraj Gandhi
- Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, University of Maryland Medical Center, 22 S. Greene Street, Baltimore, MD, 21201, USA
| |
Collapse
|
28
|
Aarabi B, Chixiang C, Simard JM, Chryssikos T, Stokum JA, Sansur CA, Crandall KM, Olexa J, Oliver J, Meister MR, Cannarsa G, Sharma A, Lomangino C, Scarboro M, Ahmed AK, Han N, Serra R, Shea P, Aresco C, Schwartzbauer GT. Proposal of a Management Algorithm to Predict the Need for Expansion Duraplasty in American Spinal Injury Association Impairment Scale Grades A-C Traumatic Cervical Spinal Cord Injury Patients. J Neurotrauma 2022; 39:1716-1726. [PMID: 35876459 PMCID: PMC9734016 DOI: 10.1089/neu.2022.0218] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Expansion duraplasty to reopen effaced subarachnoid space and improve spinal cord perfusion, autoregulation, and spinal pressure reactivity index (sPRX) has been advocated in patients with traumatic cervical spinal cord injury (tCSCI). We designed this study to identify candidates for expansion duraplasty, based on the absence of cerebrospinal fluid (CSF) interface around the spinal cord on magnetic resonance imaging (MRI), in the setting of otherwise adequate bony decompression. Over a 61-month period, 104 consecutive American Spinal Injury Association Impairment Scale (AIS) grades A-C patients with tCSCI had post-operative MRI to assess the adequacy of surgical decompression. Their mean age was 53.4 years, and 89% were male. Sixty-one patients had falls, 31 motor vehicle collisions, 11 sport injuries, and one an assault. The AIS grade was A in 56, B in 18, and C in 30 patients. Fifty-four patients had fracture dislocations; there was no evidence of skeletal injury in 50 patients. Mean intramedullary lesion length (IMLL) was 46.9 (standard deviation = 19.4) mm. Median time from injury to decompression was 17 h (interquartile range 15.2 h). After surgery, 94 patients had adequate decompression as judged by the presence of CSF anterior and posterior to the spinal cord, whereas 10 patients had effacement of the subarachnoid space at the injury epicenter. In two patients whose decompression was not definitive and post-operative MRI indicated inadequate decompression, expansion duraplasty was performed. Candidates for expansion duraplasty (i.e., those with inadequate decompression) were significantly younger (p < 0.0001), were AIS grade A (p < 0.0016), had either sport injuries (six patients) or motor vehicle collisions (three patients) (p < 0.0001), had fracture dislocation (p = 0.00016), and had longer IMLL (p = 0.0097). In regression models, patients with sport injuries and inadequate decompression were suitable candidates for expansion duraplasty (p = 0.03). Further, 9.6% of patients failed bony decompression alone and either did (2) or would have (8) benefited from expansion duraplasty.
Collapse
Affiliation(s)
- Bizhan Aarabi
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA.,R. Adams Cowley Shock Trauma Center, and Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA.,Address correspondence to: Bizhan Aarabi, MD, Department of Neurosurgery, University of Maryland School of Medicine, 22 South Greene Street, Suite S-12-D, Baltimore, MD 21201, USA
| | - Chen Chixiang
- Department of Epidemiology and Public Health, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - J. Marc Simard
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Timothy Chryssikos
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jesse A. Stokum
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Charles A. Sansur
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Kenneth M. Crandall
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Joshua Olexa
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jeffrey Oliver
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Melissa R. Meister
- Department of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Gregory Cannarsa
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Ashish Sharma
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Cara Lomangino
- R. Adams Cowley Shock Trauma Center, and Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Maureen Scarboro
- R. Adams Cowley Shock Trauma Center, and Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Abdul-Kareem Ahmed
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Nathan Han
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Riccardo Serra
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Phelan Shea
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Carla Aresco
- R. Adams Cowley Shock Trauma Center, and Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Gary T. Schwartzbauer
- Department of Neurosurgery, Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA.,R. Adams Cowley Shock Trauma Center, and Division of Biostatistics and Bioinformatics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| |
Collapse
|
29
|
Badhiwala JH, Wilson JR, Kulkarni AV, Kiss A, Harrop JS, Vaccaro AR, Aarabi B, Geisler FH, Fehlings MG. A Novel Method to Classify Cervical Incomplete Spinal Cord Injury Based on Potential for Recovery: A Group-Based Trajectory Analysis. J Neurotrauma 2022; 39:1654-1664. [PMID: 35819296 DOI: 10.1089/neu.2022.0145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The outcomes of cervical incomplete spinal cord injury (SCI) are heterogeneous. This study sought to dissociate subgroups of cervical incomplete SCI patients with distinct longitudinal temporal profiles of recovery in upper limb motor function. Patients with cervical incomplete SCI (American Spinal Injury Association Impairment Scale [AIS] B-D; C1-C8) were identified from four prospective, multi-center SCI datasets. A group-based trajectory model was fit to longitudinal upper extremity motor scores out to 1 year. Multi-variable multinomial logistic regression was performed to identify features that characterize each trajectory group. A classification system for predicting trajectory group at baseline was developed by recursive partitioning. In total, 801 patients were eligible. Four distinct trajectory groups were identified: 1) "Poor outcome": Severe injury, very minimal recovery; 2) "Moderate recovery": Moderate-to-severe injury, moderate recovery; most recovery occurs by 6 months, with mild, gradual recovery continuing thereafter; 3) "Good recovery": Moderate injury, good recovery; most recovery occurs by 3 months, with mild, gradual recovery continuing thereafter; and 4) "Excellent outcome": Mild injury, recovery to normal/near-normal by 3 months. On adjusted analyses, older age was associated with lower likelihood of "excellent outcome" (p = 0.020). AIS C and D injuries were associated with "moderate recovery," "good recovery," and "excellent outcome" (p < 0.001). Mid-cervical injuries occurred more frequently in "moderate recovery," "good recovery," and "excellent outcome" (p < 0.001) groups. Early surgical decompression (< 24 h) was associated with increased propensity for "good recovery" (p = 0.039) and "excellent outcome" (p = 0.048). A classification model based on recursive partitioning could predict trajectory group using age, AIS grade, and neurological level with an area under the curve of 0.81. Patients with cervical incomplete SCI demonstrate distinct temporal profiles of recovery in upper limb motor function. The trajectory a patient is likely to follow may be predicted at baseline with fair accuracy.
Collapse
Affiliation(s)
- Jetan H Badhiwala
- Division of Neurosurgery, Department of Surgery, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Jefferson R Wilson
- Division of Neurosurgery, Department of Surgery, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Abhaya V Kulkarni
- Division of Neurosurgery, Department of Surgery, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Alexander Kiss
- Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - James S Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Alexander R Vaccaro
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | | | - Michael G Fehlings
- Division of Neurosurgery, Department of Surgery, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
30
|
Badhiwala JH, Wilson JR, Harrop JS, Vaccaro AR, Aarabi B, Geisler FH, Fehlings MG. Early vs Late Surgical Decompression for Central Cord Syndrome. JAMA Surg 2022; 157:1024-1032. [PMID: 36169962 PMCID: PMC9520438 DOI: 10.1001/jamasurg.2022.4454] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 07/06/2022] [Indexed: 12/14/2022]
Abstract
Importance The optimal clinical management of central cord syndrome (CCS) remains unclear; yet this is becoming an increasingly relevant public health problem in the face of an aging population. Objective To provide a head-to-head comparison of the neurologic and functional outcomes of early (<24 hours) vs late (≥24 hours) surgical decompression for CCS. Design, Setting, and Participants Patients who underwent surgery for CCS (lower extremity motor score [LEMS] - upper extremity motor score [UEMS] ≥ 5) were included in this propensity score-matched cohort study. Data were collected from December 1991 to March 2017, and the analysis was performed from March 2020 to January 2021. This study identified patients with CCS from 3 international multicenter studies with data on the timing of surgical decompression in spinal cord injury. Participants were included if they had a documented baseline neurologic examination performed within 14 days of injury. Participants were eligible if they underwent surgical decompression for CCS. Exposures Early surgery was compared with late surgery. Main Outcomes and Measures Propensity scores were calculated as the probability of undergoing early compared with late surgery using the logit method and adjusting for relevant confounders. Propensity score matching was performed in a 1:1 ratio by an optimal-matching technique. The primary end point was motor recovery (UEMS, LEMS, American Spinal Injury Association [ASIA] motor score [AMS]) at 1 year. Secondary end points were Functional Independence Measure (FIM) motor score and complete independence in each FIM motor domain at 1 year. Results The final study cohort consisted of 186 patients with CCS. The early-surgery group included 93 patients (mean [SD] age, 47.8 [16.8] years; 66 male [71.0%]), and the late-surgery group included 93 patients (mean [SD] age, 48.0 [15.5] years; 75 male [80.6%]). Early surgical decompression resulted in significantly improved recovery in upper limb (mean difference [MD], 2.3; 95% CI, 0-4.5; P = .047), but not lower limb (MD, 1.1; 95% CI, -0.8 to 3.0; P = .30), motor function. In an a priori-planned subgroup analysis, outcomes were comparable with early or late decompressive surgery in patients with ASIA Impairment Scale (AIS) grade D injury. However, in patients with AIS grade C injury, early surgery resulted in significantly greater recovery in overall motor score (MD, 9.5; 95% CI, 0.5-18.4; P = .04), owing to gains in both upper and lower limb motor function. Conclusions and Relevance This cohort study found early surgical decompression to be associated with improved recovery in upper limb motor function at 1 year in patients with CCS. Treatment paradigms for CCS should be redefined to encompass early surgical decompression as a neuroprotective therapy.
Collapse
Affiliation(s)
- Jetan H. Badhiwala
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Jefferson R. Wilson
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Alexander R. Vaccaro
- Department of Orthopaedic Surgery, Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore
| | - Fred H. Geisler
- Department of Medical Imaging, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Division of Neurosurgery, Krembil Neuroscience Centre, University Health Network, Toronto, Ontario, Canada
| |
Collapse
|
31
|
Davies BM, Yanez Touzet A, Mowforth OD, Lee KS, Khan D, Furlan JC, Fehlings MG, Harrop JS, Zipser CM, Rodrigues-Pinto R, Milligan J, Sarewitz E, Curt A, Rahimi-Movaghar V, Aarabi B, Boerger TF, Tetreault L, Chen R, Guest JD, Kalsi-Ryan S, Sadler I, Widdop S, McNair AGK, Kwon BK, Kotter MRN. Development of a core measurement set for research in degenerative cervical myelopathy: a study protocol (AO Spine RECODE-DCM CMS). BMJ Open 2022; 12:e060436. [PMID: 35680260 PMCID: PMC9185555 DOI: 10.1136/bmjopen-2021-060436] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION Progress in degenerative cervical myelopathy (DCM) is hindered by inconsistent measurement and reporting. This impedes data aggregation and outcome comparison across studies. This limitation can be reversed by developing a core measurement set (CMS) for DCM research. Previously, the AO Spine Research Objectives and Common Data Elements for DCM (AO Spine RECODE-DCM) defined 'what' should be measured in DCM: the next step of this initiative is to determine 'how' to measure these features. This protocol outlines the steps necessary for the development of a CMS for DCM research and audit. METHODS AND ANALYSIS The CMS will be developed in accordance with the guidance developed by the Core Outcome Measures in Effectiveness Trials and the Consensus-based Standards for the selection of health Measurement Instruments. The process involves five phases. In phase 1, the steering committee agreed on the constructs to be measured by sourcing consensus definitions from patients, professionals and the literature. In phases 2 and 3, systematic reviews were conducted to identify tools for each construct and aggregate their evidence. Constructs with and without tools were identified, and scoping reviews were conducted for constructs without tools. Evidence on measurement properties, as well as on timing of assessments, are currently being aggregated. These will be presented in phase 4: a consensus meeting where a multi-disciplinary panel of experts will select the instruments that will form the CMS. Following selection, guidance on the implementation of the CMS will be developed and disseminated (phase 5). A preliminary CMS review scheduled at 4 years from release. ETHICS AND DISSEMINATION Ethical approval was obtained from the University of Cambridge (HBREC2019.14). Dissemination strategies will include peer-reviewed scientific publications; conference presentations; podcasts; the identification of AO Spine RECODE-DCM ambassadors; and engagement with relevant journals, funders and the DCM community.
Collapse
Affiliation(s)
- Benjamin M Davies
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Alvaro Yanez Touzet
- School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Oliver D Mowforth
- Department of Academic Neurosurgery, University of Cambridge, Cambridge, UK
| | - Keng Siang Lee
- Bristol Medical School, Faculty of Health Sciences, University of Bristol, Bristol, UK
| | - Danyal Khan
- Academic Neurosurgery Unit, University College London, London, UK
| | - Julio C Furlan
- Department of Medicine, Division of Physical Medicine and Rehabilitation, University of Toronto, Toronto, Ontario, Canada
| | - Michael G Fehlings
- Division of Neurosurgery and Spinal Program, Toronto Western Hospital, Toronto, Ontario, Canada
| | - James S Harrop
- Thomas Jefferson University, Jefferson Health System, St Louis, Missouri, USA
| | | | - Ricardo Rodrigues-Pinto
- Spinal Unit (UVM), Department of Orthopaedics, Centro Hospitalar Universitário do Porto EPE, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Porto, Portugal
| | - James Milligan
- Family Medicine, McMaster University, Hamilton, Ontario, Canada
| | | | - Armin Curt
- University Hospital Balgrist, Zürich, Switzerland
| | - Vafa Rahimi-Movaghar
- Academic Department of Neurological Surgery, Sina Trauma and Surgery Research Center, Tehran, Iran
| | - Bizhan Aarabi
- Division of Neurosurgery, University of Maryland Baltimore, Baltimore, Maryland, USA
| | - Timothy F Boerger
- Neurosurgery, Medical College of Wisconsin, Wauwatosa, Wisconsin, USA
| | - Lindsay Tetreault
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Department of Medicine, University College Cork, Cork, Ireland
| | - Robert Chen
- Neurology, Toronto Western Hospital, Toronto, Ontario, Canada
| | - James D Guest
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | | | | | | | - Angus G K McNair
- Centre for Surgical Research, Bristol Medical School: Population Health Sciences, University of Bristol, Bristol, Avon, UK
- GI Surgery, North Bristol NHS Trust, Bristol, UK
| | - Brian K Kwon
- Department of Orthopaedics, University of British Columbia, Blusson Spinal Cord Center, Vancouver, British Columbia, Canada
| | - Mark R N Kotter
- Department of Clinical Neurosurgery, University of Cambridge, Cambridge, UK
- Department of Clinical Neurosciences, Ann McLaren Laboratory of Regenerative Medicine, Cambridge, UK
| |
Collapse
|
32
|
Hawryluk GW, Selph S, Lumba-Brown A, Totten AM, Ghajar J, Aarabi B, Ecklund J, Shackelford S, Adams B, Adelson D, Armonda RA, Benjamin J, Boone D, Brody D, Dengler B, Figaji A, Grant G, Harris O, Hoffer A, Kitigawa R, Latham K, Neal C, Okonkwo DO, Pannell D, Rosenfeld JV, Rosenthal G, Rubiano A, Stein DM, Stippler M, Talbot M, Valadka A, Wright DW, Davis S, Bell R. Rationale and Methods for Updated Guidelines for the Management of Penetrating Traumatic Brain Injury. Neurotrauma Rep 2022; 3:240-247. [PMID: 35919507 PMCID: PMC9279118 DOI: 10.1089/neur.2022.0008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Penetrating traumatic brain injury (pTBI) affects civilian and military populations resulting in significant morbidity, mortality, and healthcare costs. No up-to-date and evidence-based guidelines exist to assist modern medical and surgical management of these complex injuries. A preliminary literature search revealed a need for updated guidelines, supported by the Brain Trauma Foundation. Methodologists experienced in TBI guidelines were recruited to support project development alongside two cochairs and a diverse steering committee. An expert multi-disciplinary workgroup was established and vetted to inform key clinical questions, to perform an evidence review and the development of recommendations relevant to pTBI. The methodological approach for the project was finalized. The development of up-to-date evidence- and consensus-based clinical care guidelines and algorithms for pTBI will provide critical guidance to care providers in the pre-hospital and emergent, medical, and surgical settings.
Collapse
Affiliation(s)
| | - Shelley Selph
- Department of Medical Informatics and Clinical Epidemiology, Pacific Northwest Evidence-based Practice Center, Oregon Health & Science University, Portland, Oregon, USA
| | - Angela Lumba-Brown
- Department of Emergency Medicine, Stanford University School of Medicine, Stanford University, Palo Alto, California, USA
| | - Annette M. Totten
- Department of Medical Informatics and Clinical Epidemiology, Pacific Northwest Evidence-based Practice Center, Oregon Health & Science University, Portland, Oregon, USA
| | - Jamshid Ghajar
- Stanford Neuroscience Health Center, Stanford University School of Medicine, Stanford University, Palo Alto, California, USA
| | - Bizhan Aarabi
- University of Maryland Neurosurgery Associates, R Adams Cowley Shock Trauma Center, Baltimore, Maryland, USA
| | - James Ecklund
- Inova Neuroscience and Spine Institute, Fairfax, Virginia, USA
| | - Stacy Shackelford
- Joint Trauma System, Department of Defense, Center of Excellence for Trauma, Baltimore, Maryland, USA
| | - Britton Adams
- Independent Duty Medical Technician (IDMT), Hurlburt Field, Florida, USA
| | - David Adelson
- Barrow Neurological Institute at Phoenix Children's Hospital, University of Arizona College of Medicine, Phoenix, Arizona, USA
| | - Rocco A. Armonda
- Department of Neurosurgery, MedStar Georgetown University Hospital, Washington, DC, USA
| | - John Benjamin
- Anaethesia and Critical Care, Uniformed Services University, Bethesda, Maryland, USA
| | - Darrell Boone
- Department of Surgery, Memorial University of Newfoundland, St. John's, Newfoundland, Canada
| | - David Brody
- Center for Neuroscience and Regenerative Medicine, Uniformed Services University, Bethesda, Maryland, USA
| | - Bradley Dengler
- Department of Neurosurgery, Uniformed Services University, Bethesda, Maryland, USA
| | - Anthony Figaji
- Department of Neurosurgery, University of Cape Town, Cape Town, Western Cape, South Africa
| | - Gerald Grant
- Department of Neurosurgery, Duke University, Raleigh, North Carolina, USA
| | - Odette Harris
- Department of Neurosurgery, Stanford University School of Medicine, Stanford University, Palo Alto, California, USA
| | - Alan Hoffer
- Department of Neurosurgery, Case Western Reserve University, Cleveland, Ohio, USA
| | - Ryan Kitigawa
- McGovern Medical School, University of Texas, Houston, Texas, USA
| | - Kerry Latham
- Adult Outpatient Behavioral Health, Bethesda, Maryland, USA
| | - Christopher Neal
- Department of Neurosurgery Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - David O. Okonkwo
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Dylan Pannell
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | | | - Guy Rosenthal
- Hadassah University Medical Center, Jerusalem, Israel
| | - Andres Rubiano
- INUB-Meditech Research Group, Neuroscience Institute, Universidad El Bosque, Bogota, Colombia
| | - Deborah M. Stein
- University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Martina Stippler
- Department of Neurosurgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Max Talbot
- Royal Canadian Medical Service, Canadian Armed Forces, Canadian Forces Base Borden, Ontario, Canada
| | - Alex Valadka
- Department of Neurological Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - David W. Wright
- Department of Emergency Medicine, Emory University, Atlanta, Georgia, USA
| | - Shelton Davis
- Department of Physical Medicine and Rehabilitation, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Randy Bell
- Department of Neurosurgery, Uniformed Services University, Bethesda, Maryland, USA
| |
Collapse
|
33
|
Kim KT, Wessell AP, Oliver J, Boulter JH, Stokum JA, Lomangino C, Scarboro M, Aarabi B, Chryssikos T, Schwartzbauer G. Comparative Therapeutic Effectiveness of Anticoagulation and Conservative Management in Traumatic Cerebral Venous Sinus Thrombosis. Neurosurgery 2022; 90:708-716. [PMID: 35315808 DOI: 10.1227/neu.0000000000001892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 12/05/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Consensus is currently lacking in the optimal treatment for blunt traumatic cerebral venous sinus thrombosis (tCVST). Anticoagulation (AC) is used for treating spontaneous CVST, but its role in tCVST remains unclear. OBJECTIVE To investigate the characteristics and outcomes of patients treated with AC compared with patients managed conservatively. METHODS We retrospectively reviewed patients who presented to a Level 1 trauma center with acute skull fracture after blunt head trauma who underwent dedicated venous imaging. RESULTS There were 137 of 424 patients (32.3%) presenting with skull fractures with tCVST on venous imaging. Among them, 82 (60%) were treated with AC while 55 (40%) were managed conservatively. Analysis of baseline characteristics demonstrated no significant difference in age, sex, admission Glasgow Coma Scale, admission Injury Severity Score, rates of associated intracranial hemorrhage, or neurosurgical interventions. New or worsening intracranial hemorrhage was seen in 7 patients treated with AC. Patients on AC had significantly lower mortality than non-AC (1% vs 15%; P = .003). There was no difference in the Glasgow Coma Scale or Glasgow Outcome Scale at last clinical follow-up. On follow-up venous imaging, patients treated with AC were more likely to experience full thrombus recanalization than non-AC (54% vs 32%; P = .012), and subsequent multiple regression analysis revealed that treatment with AC was a significant predictor of full thrombus recanalization (odds ratio, 5.18; CI, 1.60-16.81; P = .006). CONCLUSION Treatment with AC for tCVST due to blunt head trauma may promote higher rates of complete thrombus recanalization when compared with conservative management.
Collapse
Affiliation(s)
- Kevin T Kim
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Aaron P Wessell
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jeffrey Oliver
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jason H Boulter
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA.,Division of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Jesse A Stokum
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Cara Lomangino
- Program in Trauma, R. Adams Cowley Shock Trauma Center, University of Maryland Medical Center, Baltimore, Maryland, USA
| | - Maureen Scarboro
- Program in Trauma, R. Adams Cowley Shock Trauma Center, University of Maryland Medical Center, Baltimore, Maryland, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA.,Program in Trauma, R. Adams Cowley Shock Trauma Center, University of Maryland Medical Center, Baltimore, Maryland, USA
| | - Timothy Chryssikos
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Gary Schwartzbauer
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA.,Program in Trauma, R. Adams Cowley Shock Trauma Center, University of Maryland Medical Center, Baltimore, Maryland, USA
| |
Collapse
|
34
|
Stokum JA, Chryssikos T, Shea P, Olexa J, Schwartzbauer GT, Aarabi B. Letter: Ultrasound in Traumatic Spinal Cord Injury: A Wide-Open Field. Neurosurgery 2022; 90:e110-e111. [PMID: 35175245 DOI: 10.1227/neu.0000000000001866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 11/10/2021] [Indexed: 11/19/2022] Open
Affiliation(s)
- Jesse A Stokum
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | | | | | | | | | | |
Collapse
|
35
|
Martin AR, Tetreault L, Nouri A, Curt A, Freund P, Rahimi-Movaghar V, Wilson JR, Fehlings MG, Kwon BK, Harrop JS, Davies BM, Kotter MRN, Guest JD, Aarabi B, Kurpad SN. Imaging and Electrophysiology for Degenerative Cervical Myelopathy [AO Spine RECODE-DCM Research Priority Number 9]. Global Spine J 2022; 12:130S-146S. [PMID: 34797993 PMCID: PMC8859711 DOI: 10.1177/21925682211057484] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
STUDY DESIGN Narrative review. OBJECTIVE The current review aimed to describe the role of existing techniques and emerging methods of imaging and electrophysiology for the management of degenerative cervical myelopathy (DCM), a common and often progressive condition that causes spinal cord dysfunction and significant morbidity globally. METHODS A narrative review was conducted to summarize the existing literature and highlight future directions. RESULTS Anatomical magnetic resonance imaging (MRI) is well established in the literature as the key imaging tool to identify spinal cord compression, disc herniation/bulging, and inbuckling of the ligamentum flavum, thus facilitating surgical planning, while radiographs and computed tomography (CT) provide complimentary information. Electrophysiology techniques are primarily used to rule out competing diagnoses. However, signal change and measures of cord compression on conventional MRI have limited utility to characterize the degree of tissue injury, which may be helpful for diagnosis, prognostication, and repeated assessments to identify deterioration. Early translational studies of quantitative imaging and electrophysiology techniques show potential of these methods to more accurately reflect changes in spinal cord microstructure and function. CONCLUSION Currently, clinical management of DCM relies heavily on anatomical MRI, with additional contributions from radiographs, CT, and electrophysiology. Novel quantitative assessments of microstructure, perfusion, and function have the potential to transform clinical practice, but require robust validation, automation, and standardization prior to uptake.
Collapse
Affiliation(s)
- Allan R. Martin
- Department of Neurological Surgery, University of California Davis, Davis, CA, USA
| | - Lindsay Tetreault
- Department of Neurology, New York University, Langone Health, Graduate Medical Education, New York, NY, USA
| | - Aria Nouri
- Division of Neurosurgery, Geneva University Hospitals, University of Geneva, Geneva, Switzerland
| | - Armin Curt
- University Spine Center, Balgrist University Hospital, Zurich, Switzerland
| | - Patrick Freund
- University Spine Center, Balgrist University Hospital, Zurich, Switzerland
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Jefferson R. Wilson
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Brian K. Kwon
- Vancouver Spine Surgery Institute, Department of Orthopedics, The University of British Columbia, Vancouver, BC, Canada
| | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | | | | | - James D. Guest
- Department of Neurosurgery and The Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland, Baltimore, MD, USA
| | - Shekar N Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
| |
Collapse
|
36
|
Davies BM, Phillips R, Clarke D, Furlan JC, Demetriades AK, Milligan J, Witiw CD, Harrop JS, Aarabi B, Kurpad SN, Guest JD, Wilson JR, Kwon BK, Vaccaro AR, Fehlings MG, Rahimi-Movaghar V, Kotter MRN. Establishing the Socio-Economic Impact of Degenerative Cervical Myelopathy Is Fundamental to Improving Outcomes [AO Spine RECODE-DCM Research Priority Number 8]. Global Spine J 2022; 12:122S-129S. [PMID: 35174730 PMCID: PMC8859704 DOI: 10.1177/21925682211039835] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
STUDY DESIGN Literature Review (Narrative). OBJECTIVE To contextualize AO Spine RECODE-DCM research priority number 5: What is the socio-economic impact of DCM? (The financial impact of living with DCM to the individual, their supporters, and society as a whole). METHODS In this review, we introduce the methodology of health-economic investigation, including potential techniques and approaches. We summarize the current health-economic evidence within DCM, so far focused on surgical treatment. We also cover the first national estimate, in partnership with Myelopathy.org from the United Kingdom, of the cost of DCM to society. We then demonstrate the significance of this question to advancing care and outcomes in the field. RESULTS DCM is a common and often disabling condition, with a significant lack of recognition. While evidence demonstrates the cost-effectives of surgery, even among higher income countries, health inequalities exist. Further the prevalent residual disability in myelopathy, despite treatment affects both the individual and society as a whole. A report from the United Kingdom provides the first cost-estimate to their society; an annual cost of ∼£681.6 million per year, but this is likely a significant underestimate. CONCLUSION A clear quantification of the impact of DCM is needed to raise the profile of a common and disabling condition. Current evidence suggests this is likely to be globally substantial.
Collapse
Affiliation(s)
- Benjamin M. Davies
- Department of Neurosurgery, University of Cambridge, Cambridge, United Kingdom
- , International Charity for Degenerative Cervical Myelopathy, United Kingdom
| | | | - David Clarke
- Department of Neurosurgery, University of Cambridge, Cambridge, United Kingdom
| | - Julio C. Furlan
- KITE Research Institute, University Health Network, Toronto, Ontario, Canada
- Division of Physical Medicine and Rehabilitation, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | | | - Jamie Milligan
- Department of Family Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Christopher D. Witiw
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Shekar N. Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - James D. Guest
- Department of Neurosurgery and The Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Jefferson R. Wilson
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Brian K. Kwon
- Department of Orthopedics, Vancouver Spine Surgery Institute, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Alexander R. Vaccaro
- Department of Orthopaedic Surgery, Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mark R. N. Kotter
- Department of Neurosurgery, University of Cambridge, Cambridge, United Kingdom
- , International Charity for Degenerative Cervical Myelopathy, United Kingdom
| |
Collapse
|
37
|
Nouri A, Tessitore E, Molliqaj G, Meling T, Schaller K, Nakashima H, Yukawa Y, Bednarik J, Martin AR, Vajkoczy P, Cheng JS, Kwon BK, Kurpad SN, Fehlings MG, Harrop JS, Aarabi B, Rahimi-Movaghar V, Guest JD, Davies BM, Kotter MRN, Wilson JR. Degenerative Cervical Myelopathy: Development and Natural History [AO Spine RECODE-DCM Research Priority Number 2]. Global Spine J 2022; 12:39S-54S. [PMID: 35174726 PMCID: PMC8859703 DOI: 10.1177/21925682211036071] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
STUDY DESIGN Narrative review. OBJECTIVES To discuss the current understanding of the natural history of degenerative cervical myelopathy (DCM). METHODS Literature review summarizing current evidence pertaining to the natural history and risk factors of DCM. RESULTS DCM is a common condition in which progressive arthritic disease of the cervical spine leads to spinal cord compression resulting in a constellation of neurological symptoms, in particular upper extremity dysfunction and gait impairment. Anatomical factors including cord-canal mismatch, congenitally fused vertebrae and genetic factors may increase individuals' risk for DCM development. Non-myelopathic spinal cord compression (NMSCC) is a common phenomenon with a prevalence of 24.2% in the healthy population, and 35.3% among individuals >60 years of age. Clinical radiculopathy and/or electrophysiological signs of cervical cord dysfunction appear to be risk factors for myelopathy development. Radiological progression of incidental Ossification of the Posterior Longitudinal Ligament (OPLL) is estimated at 18.3% over 81-months and development of myelopathy ranges between 0-61.5% (follow-up ranging from 40 to 124 months between studies) among studies. In patients with symptomatic DCM undergoing non-operative treatment, 20-62% will experience neurological deterioration within 3-6 years. CONCLUSION Current estimates surrounding the natural history of DCM, particularly those individuals with mild or minimal impairment, lack precision. Clear predictors of clinical deterioration for those treated with non-operative care are yet to be identified. Future studies are needed on this topic to help improve treatment counseling and clinical prognostication.
Collapse
Affiliation(s)
- Aria Nouri
- Division of Neurosurgery, Geneva University Hospitals, University of Geneva, Geneva, Switzerland
| | - Enrico Tessitore
- Division of Neurosurgery, Geneva University Hospitals, University of Geneva, Geneva, Switzerland
| | - Granit Molliqaj
- Division of Neurosurgery, Geneva University Hospitals, University of Geneva, Geneva, Switzerland
| | - Torstein Meling
- Division of Neurosurgery, Geneva University Hospitals, University of Geneva, Geneva, Switzerland
| | - Karl Schaller
- Division of Neurosurgery, Geneva University Hospitals, University of Geneva, Geneva, Switzerland
| | - Hiroaki Nakashima
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasutsugu Yukawa
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Josef Bednarik
- Department of Neurology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Allan R. Martin
- Department of Neurosurgery, University of California Davis, Sacramento, CA, USA
| | - Peter Vajkoczy
- Department of Neurosurgery, Charité Universitätsmedizin, Berlin, Germany
| | - Joseph S. Cheng
- Department of Neurosurgery, University of Cincinnati, Cincinnati, OH, USA
| | - Brian K. Kwon
- Vancouver Spine Surgery Institute, Department of Orthopedics, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Shekar N. Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - Michael G. Fehlings
- Division of Neurosurgery and Spine Program, University of Toronto, Ontario, Canada
| | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland, Baltimore, MD, USA
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - James D. Guest
- Department of Neurosurgery and The Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, FL, USA
| | - Benjamin M. Davies
- Department of Neurosciences, University of Cambridge, Cambridge, United Kingdom
- Myelopathy.org, International Charity for Degenerative Cervical Myelopathy, United Kingdom
| | - Mark R. N. Kotter
- Department of Neurosciences, University of Cambridge, Cambridge, United Kingdom
- Myelopathy.org, International Charity for Degenerative Cervical Myelopathy, United Kingdom
| | - Jefferson R. Wilson
- Division of Neurosurgery and Spine Program, University of Toronto, Ontario, Canada
| |
Collapse
|
38
|
Boerger TF, Hyngstrom AS, Furlan JC, Kalsi-Ryan S, Curt A, Kwon BK, Kurpad SN, Fehlings MG, Harrop JS, Aarabi B, Rahimi-Movaghar V, Guest JD, Wilson JR, Davies BM, Kotter MRN, Koljonen PA. Developing Peri-Operative Rehabilitation in Degenerative Cervical Myelopathy [AO Spine RECODE-DCM Research Priority Number 6]: An Unexplored Opportunity? Global Spine J 2022; 12:97S-108S. [PMID: 35174735 PMCID: PMC8859699 DOI: 10.1177/21925682211050925] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
STUDY DESIGN Narrative review. OBJECTIVE Degenerative cervical myelopathy is one of the most frequent impairments of the spinal cord encountered internationally in adults. Currently, surgical decompression is the recommended treatment for people with DCM (PwCM) presenting with moderate to severe symptoms or neurological deficits. However, despite surgical intervention, not all patients make a complete recovery due to the irreversible tissue damage within the spinal cord. The objective of this review is to describe the state and gaps in the current literature on rehabilitation for PwCM and possible innovative rehabilitation strategies. METHODS Literature search. RESULTS In other neurological disorders such as stroke and acute traumatic spinal cord injury (SCI), timely and strategic rehabilitation has been shown to be indispensable for maximizing functional outcomes, and it is imperative that appropriate perioperative rehabilitative interventions accompany surgical approaches in order to enable the best outcomes. In this review, the current state of knowledge regarding rehabilitation for PwCM is described. Additionally, various therapies that have shown to improve outcomes in comparable neurological conditions such as stroke and SCI which may be translated to DCM will be reviewed. CONCLUSIONS We conclude that locomotor training and arm/hand therapy may benefit PwCM. Further, we conclude that body weight support, robotic assistance, and virtual/augmented reality therapies may be beneficial therapeutic analogs to locomotor and hand therapies.
Collapse
Affiliation(s)
- Timothy F. Boerger
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | | | - Julio C. Furlan
- KITE Research Institute, University Health Network, Toronto, ON, Canada
- Division of Physical Medicine and Rehabilitation, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Sukhvinder Kalsi-Ryan
- KITE Research Institute, University Health Network, Toronto, ON, Canada
- Division of Physical Medicine and Rehabilitation, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Armin Curt
- University Spine Center, Balgrist University Hospital, Zurich, Switzerland
| | - Brian K. Kwon
- Department of Orthopedics, Vancouver Spine Surgery Institute, The University of British Columbia, Vancouver, BC, Canada
| | - Shekar N. Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - James D. Guest
- Department of Neurosurgery and The Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Jefferson R. Wilson
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | | | | | - Paul A. Koljonen
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| |
Collapse
|
39
|
Mowforth OD, Khan DZ, Wong MY, Pickering GAE, Dean L, Magee J, Mullarkey L, Hirayama Y, Rihova M, Butler M, Stewart M, Goulson B, Ahmed S, Fricke K, Popa-Nimigean V, Millar Z, Venkatesh A, Willison A, Senthil K, Hazenbiller O, Sarewitz E, Sadler I, Gronlund T, Tetreault L, Harrop JS, Aarabi B, Rahimi-Movaghar V, Kurpad SN, Guest JD, Wilson JR, Kwon BK, Fehlings MG, McNair AG, Davies BM, Kotter MR. Gathering Global Perspectives to Establish the Research Priorities and Minimum Data Sets for Degenerative Cervical Myelopathy: Sampling Strategy of the First Round Consensus Surveys of AO Spine RECODE-DCM. Global Spine J 2022; 12:8S-18S. [PMID: 34879754 PMCID: PMC8859701 DOI: 10.1177/21925682211047546] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
STUDY DESIGN Survey. INTRODUCTION AO Spine Research Objectives and Common Data Elements for Degenerative Cervical Myelopathy (AO Spine RECODE-DCM) is an international initiative that aims to accelerate knowledge discovery and improve outcomes by developing a consensus framework for research. This includes defining the top research priorities, an index term and a minimum data set (core outcome set and core data elements set - core outcome set (COS)/core data elements (CDE)). OBJECTIVE To describe how perspectives were gathered and report the detailed sampling characteristics. METHODS A two-stage, electronic survey was used to gather and seek initial consensus. Perspectives were sought from spinal surgeons, other healthcare professionals and people with degenerative cervical myelopathy (DCM). Participants were allocated to one of two parallel streams: (1) priority setting or (2) minimum dataset. An email campaign was developed to advertise the survey to relevant global stakeholder individuals and organisations. People with DCM were recruited using the international DCM charity Myelopathy.org and its social media channels. A network of global partners was recruited to act as project ambassadors. Data from Google Analytics, MailChimp and Calibrum helped optimise survey dissemination. RESULTS Survey engagement was high amongst the three stakeholder groups: 208 people with DCM, 389 spinal surgeons and 157 other healthcare professionals. Individuals from 76 different countries participated; the United States, United Kingdom and Canada were the most common countries of participants. CONCLUSION AO Spine RECODE-DCM recruited a diverse and sufficient number of participants for an international PSP and COS/CDE process. Whilst PSP and COS/CDE have been undertaken in other fields, to our knowledge, this is the first time they have been combined in one process.
Collapse
Affiliation(s)
- Oliver D. Mowforth
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge; Addenbrooke's Hospital, UK
| | - Danyal Z Khan
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge; Addenbrooke's Hospital, UK
| | - Mei Yin Wong
- School of Clinical Medicine, University of Cambridge, UK
| | | | - Lydia Dean
- School of Clinical Medicine, University of Cambridge, UK
| | - Joe Magee
- School of Clinical Medicine, University of Cambridge, UK
| | | | - Yuri Hirayama
- School of Clinical Medicine, University of Cambridge, UK
| | - Martina Rihova
- School of Clinical Medicine, University of Cambridge, UK
| | | | - Max Stewart
- School of Clinical Medicine, University of Cambridge, UK
| | - Beth Goulson
- School of Clinical Medicine, University of Cambridge, UK
| | - Shahzaib Ahmed
- School of Clinical Medicine, University of Cambridge, UK
| | - Kai Fricke
- School of Clinical Medicine, University of Cambridge, UK
| | | | - Zack Millar
- School of Clinical Medicine, University of Cambridge, UK
| | | | | | | | | | | | | | - Toto Gronlund
- National Institute for Health Research, University of Southampton, UK
| | - Lindsay Tetreault
- Langone Health, Graduate Medical Education, Department of Neurology, New York University, New York, NY, USA
| | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, United States
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Shekar N Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, United States
| | - James D. Guest
- Department of Neurosurgery, University of Miami, Miami, FL, United States
| | - Jefferson R. Wilson
- Division of Neurosurgery, Department of Surgery, University of Toronto, Canada
| | - Brian K. Kwon
- Vancouver Spine Surgery Institute, Department of Orthopedics, The University of British Columbia, Vancouver, BC, Canada
| | - Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Canada
| | | | - Benjamin M. Davies
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge; Addenbrooke's Hospital, UK
| | - Mark R.N. Kotter
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge; Addenbrooke's Hospital, UK
| | | |
Collapse
|
40
|
Rodrigues-Pinto R, Montenegro TS, Davies BM, Kato S, Kawaguchi Y, Ito M, Zileli M, Kwon BK, Fehlings MG, Koljonen PA, Kurpad SN, Guest JD, Aarabi B, Rahimi-Movaghar V, Wilson JR, Kotter MRN, Harrop JS. Optimizing the Application of Surgery for Degenerative Cervical Myelopathy [AO Spine RECODE-DCM Research Priority Number 10]. Global Spine J 2022; 12:147S-158S. [PMID: 35174733 PMCID: PMC8859702 DOI: 10.1177/21925682211062494] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
STUDY DESIGN Literature Review (Narrative). OBJECTIVE To introduce the number 10 research priority for Degenerative Cervical Myelopathy: Individualizing Surgery. METHODS This article summarizes the current recommendations and indications for surgery, including how known prognostic factors such as injury time, age, disease severity, and associated comorbidities impact surgical outcome. It also considers key areas of uncertainty that should be the focus of future research. RESULTS While a small proportion of conservatively managed patients may remain stable, the majority will deteriorate over time. To date, surgical decompression is the mainstay of treatment, able to halt disease progression and improve neurologic function and quality of life for most patients. Whilst this recognition has led to recommendations on when to offer surgery, there remain many uncertainties including the type of surgery, or timing in milder and/or asymptomatic cases. Their clarification has the potential to transform outcomes, by ensuring surgery offers each individual its maximum benefit. CONCLUSION Developing the evidence to better guide surgical decision-making at the individual patient level is a research priority for Degenerative Cervical Myelopathy.
Collapse
Affiliation(s)
- Ricardo Rodrigues-Pinto
- Spinal Unit (UVM), Department of Orthopaedics, Centro Hospitalar Universitário do Porto - Hospital de Santo António, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Porto, Portugal
| | - Thiago S. Montenegro
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | | | - So Kato
- Department of Orthopaedic Surgery, The University of Tokyo, Tokyo, Japan
| | | | - Manabu Ito
- Department of Orthopaedic Surgery, National Hospital Organization Hokkaido Medical Center, Sapporo, Japan
| | - Mehmet Zileli
- Neurosurgery Department, Ege University, Bornova, Izmir, Turkey
| | - Brian K. Kwon
- Vancouver Spine Surgery Institute, Department of Orthopedics, The University of British Columbia, Vancouver, BC, Canada
| | - Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, ON, Canada
| | - Paul A. Koljonen
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Shekar N. Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - James D. Guest
- Department of Neurosurgery and The Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Iran
| | - Jefferson R. Wilson
- Division of Neurosurgery, Department of Surgery, University of Toronto, ON, Canada
| | | | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| |
Collapse
|
41
|
Gharooni AA, Kwon BK, Fehlings MG, Boerger TF, Rodrigues-Pinto R, Koljonen PA, Kurpad SN, Harrop JS, Aarabi B, Rahimi-Movaghar V, Wilson JR, Davies BM, Kotter MRN, Guest JD. Developing Novel Therapies for Degenerative Cervical Myelopathy [AO Spine RECODE-DCM Research Priority Number 7]: Opportunities From Restorative Neurobiology. Global Spine J 2022; 12:109S-121S. [PMID: 35174725 PMCID: PMC8859698 DOI: 10.1177/21925682211052920] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
STUDY DESIGN Narrative review. OBJECTIVES To provide an overview of contemporary therapies for the James Lind Alliance priority setting partnership for degenerative cervical myelopathy (DCM) question: 'Can novel therapies, including stem-cell, gene, pharmacological and neuroprotective therapies, be identified to improve the health and wellbeing of people living with DCM and slow down disease progression?' METHODS A review of the literature was conducted to outline the pathophysiology of DCM and present contemporary therapies that may hold therapeutic value in 3 broad categories of neuroprotection, neuroregeneration, and neuromodulation. RESULTS Chronic spinal cord compression leads to ischaemia, neuroinflammation, demyelination, and neuronal loss. Surgical intervention may halt progression and improve symptoms, though the majority do not make a full recovery leading to lifelong disability. Neuroprotective agents disrupt deleterious secondary injury pathways, and one agent, Riluzole, has undergone Phase-III investigation in DCM. Although it did not show efficacy on the primary outcome modified Japanese Orthopaedic Association scale, it showed promising results in pain reduction. Regenerative approaches are in the early stage, with one agent, Ibudilast, currently in a phase-III investigation. Neuromodulation approaches aim to therapeutically alter the state of spinal cord excitation by electrical stimulation with a variety of approaches. Case studies using electrical neuromuscular and spinal cord stimulation have shown positive therapeutic utility. CONCLUSION There is limited research into interventions in the 3 broad areas of neuroprotection, neuroregeneration, and neuromodulation for DCM. Contemporary and novel therapies for DCM are now a top 10 priority, and whilst research in these areas is limited in DCM, it is hoped that this review will encourage research into this priority.
Collapse
Affiliation(s)
- Aref-Ali Gharooni
- Neurosurgery Unit, Department of Clinical Neuroscience, University of Cambridge, UK
| | - Brian K. Kwon
- Vancouver Spine Surgery Institute, Department of Orthopedics, The University of British Columbia, Vancouver, BC, Canada
| | - Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Timothy F. Boerger
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - Ricardo Rodrigues-Pinto
- Spinal Unit (UVM), Department of Orthopaedics, Centro Hospitalar Universitário do Porto - Hospital de Santo António, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Porto, Portugal
| | - Paul Aarne Koljonen
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Shekar N. Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Jefferson R. Wilson
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Benjamin M. Davies
- Neurosurgery Unit, Department of Clinical Neuroscience, University of Cambridge, UK
| | - Mark R. N. Kotter
- Neurosurgery Unit, Department of Clinical Neuroscience, University of Cambridge, UK
| | - James D. Guest
- Department of Neurosurgery and The Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, Miami, FL, USA
| |
Collapse
|
42
|
Davies BM, Mowforth O, Wood H, Karimi Z, Sadler I, Tetreault L, Milligan J, Wilson JRF, Kalsi-Ryan S, Furlan JC, Kawaguchi Y, Ito M, Zipser CM, Boerger TF, Vaccaro AR, Murphy RKJ, Hutton M, Rodrigues-Pinto R, Koljonen PA, Harrop JS, Aarabi B, Rahimi-Movaghar V, Kurpad SN, Guest JD, Wilson JR, Kwon BK, Kotter MRN, Fehlings MG. Improving Awareness Could Transform Outcomes in Degenerative Cervical Myelopathy [AO Spine RECODE-DCM Research Priority Number 1]. Global Spine J 2022; 12:28S-38S. [PMID: 35174734 PMCID: PMC8859708 DOI: 10.1177/21925682211050927] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
STUDY DESIGN Literature Review (Narrative). OBJECTIVE To introduce the number one research priority for Degenerative Cervical Myelopathy (DCM): Raising Awareness. METHODS Raising awareness has been recognized by AO Spine RECODE-DCM as the number one research priority. This article reviews the evidence that awareness is low, the potential drivers, and why this must be addressed. Case studies of success from other diseases are also reviewed, drawing potential parallels and opportunities for DCM. RESULTS DCM may affect as many as 1 in 50 adults, yet few will receive a diagnosis and those that do will wait many years for it. This leads to poorer outcomes from surgery and greater disability. DCM is rarely featured in healthcare professional training programs and has received relatively little research funding (<2% of Amyotrophic Lateral Sclerosis or Multiple Sclerosis over the last 25 years). The transformation of stroke and acute coronary syndrome services, from a position of best supportive care with occasional surgery over 50 years ago, to avoidable disability today, represents transferable examples of success and potential opportunities for DCM. Central to this is raising awareness. CONCLUSION Despite the devastating burden on the patient, recognition across research, clinical practice, and healthcare policy are limited. DCM represents a significant unmet need that must become an international public health priority.
Collapse
Affiliation(s)
- Benjamin M. Davies
- Myelopathy.org, International Charity for Degenerative Cervical Myelopathy, Cambridge, UK
- Department of Neurosurgery, University of Cambridge, Cambridge, UK
| | - Oliver Mowforth
- Myelopathy.org, International Charity for Degenerative Cervical Myelopathy, Cambridge, UK
- Department of Neurosurgery, University of Cambridge, Cambridge, UK
| | - Helen Wood
- Myelopathy.org, International Charity for Degenerative Cervical Myelopathy, Cambridge, UK
| | - Zahabiya Karimi
- Myelopathy.org, International Charity for Degenerative Cervical Myelopathy, Cambridge, UK
| | - Iwan Sadler
- Myelopathy.org, International Charity for Degenerative Cervical Myelopathy, Cambridge, UK
| | - Lindsay Tetreault
- Department of Neurology, Langone Health, Graduate Medical Education, New York University, New York, NY, USA
| | - Jamie Milligan
- Department of Family Medicine, McMaster University, Hamilton, ON, Canada
| | - Jamie R. F. Wilson
- Department of Neurosurgery, University of Nebraska Medical Center, Omaha, NE, USA
| | - Sukhvinder Kalsi-Ryan
- KITE Research Institute, University Health Network, Toronto, ON, Canada
- Department of Medicine, Division of Physical Medicine and Rehabilitation, University of Toronto, Toronto, ON, Canada
| | - Julio C. Furlan
- KITE Research Institute, University Health Network, Toronto, ON, Canada
- Department of Medicine, Division of Physical Medicine and Rehabilitation, University of Toronto, Toronto, ON, Canada
| | | | - Manabu Ito
- Department of Orthopaedic Surgery, National Hospital Organization Hokkaido Medical Center, Sapporo, Japan
| | - Carl Moritz Zipser
- University Spine Center, Balgrist University Hospital, Zurich, Switzerland
| | - Timothy F Boerger
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - Alexander R. Vaccaro
- Department of Orthopaedic Surgery, Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Rory K. J. Murphy
- Department of Neurosurgery, St. Joseph’s Hospital and Medical Center, Barrow Neurological Institute, Phoenix, AZ, USA
| | - Mike Hutton
- Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
| | - Ricardo Rodrigues-Pinto
- Department of Orthopaedics, Spinal Unit (UVM), Centro Hospitalar Universitário Do Porto - Hospital de Santo António, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Porto, Portugal
| | - Paul A. Koljonen
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Shekar N Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - James D. Guest
- Department of Neurosurgery and The Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Jefferson R. Wilson
- Department of Surgery, Division of Neurosurgery, University of Toronto, Toronto, ON, Canada
| | - Brian K. Kwon
- Department of Orthopedics, Vancouver Spine Surgery Institute, The University of British Columbia, Vancouver, BC, Canada
| | - Mark R. N. Kotter
- Myelopathy.org, International Charity for Degenerative Cervical Myelopathy, Cambridge, UK
- Department of Neurosurgery, University of Cambridge, Cambridge, UK
| | - Michael G. Fehlings
- Department of Surgery, Division of Neurosurgery, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
43
|
Tetreault L, Mowforth O, Khan DZ, Gronlund T, Garwood P, Hazenbiller O, Harrop JS, Aarabi B, Rahimi-Movaghar V, Kurpad SN, Guest JD, Wilson JR, Kwon BK, Fehlings MG, Davies BM, Kotter MRN. James Lind Alliance Priority Setting Partnership for Degenerative Cervical Myelopathy [AO Spine RECODE-DCM]: An Overview of the Methodology Used to Process and Short-List Research Uncertainties. Global Spine J 2022; 12:19S-27S. [PMID: 35174731 PMCID: PMC8859709 DOI: 10.1177/21925682211062501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
STUDY DESIGN Overview of the methods used for a James Lind Alliance (JLA) Priority Setting Partnership (PSP). OBJECTIVES The objectives of this article are to (i) provide a brief overview of the JLA-facilitated PSP process; (ii) outline how research uncertainties were initially processed in the AO Spine RECODE-DCM PSP; and (iii) delineate the methods for interim prioritization and the priority setting workshop. METHODS A steering group was created to define the scope for the PSP, organize its activities, and establish protocols for decision-making. A survey was created asking what questions on the diagnosis, treatment, and long-term management of DCM should be answered by future research. Results from the survey were sorted into summary questions. Several databases were searched to identify literature that already answered these summary questions. The final list of summary questions was distributed by survey for interim prioritization. Participants were asked to select the top ten most important summary questions. The questions that were ranked the highest were discussed at an in-person consensus workshop. RESULTS The initial survey yielded a total of 3404 potential research questions. Of the in-scope submissions, 988 were related to diagnosis, 1324 to treatment, and 615 to long-term management of DCM. A total of 76 summary questions were developed to reflect the original submissions. Following a second survey, a list of the top 26 interim priorities was generated and discussed at the in-person priority setting workshop. CONCLUSIONS PSPs enable research priorities to be identified that consider the perspectives and interests of all relevant stakeholders.
Collapse
Affiliation(s)
- Lindsay Tetreault
- Langone Health, Graduate Medical Education, Department of Neurology, New York University, New York, NY, USA
| | - Oliver Mowforth
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Danyal Z. Khan
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | | | - Philip Garwood
- Graduate Medical Education, Internal Medicine, University of Toronto, Toronto, ON, Canada
| | | | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Shekar N. Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - James D. Guest
- Department of Neurosurgery and the Miami Project to Cure Paralysis, the Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Jefferson R. Wilson
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Brian K. Kwon
- Vancouver Spine Surgery Institute, Department of Orthopedics, the University of British Columbia, Vancouver, BC, Canada
| | - Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Benjamin M. Davies
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Vancouver Spine Surgery Institute, Department of Orthopedics, the University of British Columbia, Vancouver, BC, Canada
| | - Mark R. N. Kotter
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Vancouver Spine Surgery Institute, Department of Orthopedics, the University of British Columbia, Vancouver, BC, Canada
| | | |
Collapse
|
44
|
Hilton B, Gardner EL, Jiang Z, Tetreault L, Wilson JRF, Zipser CM, Riew KD, Guest JD, Harrop JS, Fehlings MG, Rodrigues-Pinto R, Rahimi-Movaghar V, Aarabi B, Koljonen PA, Kotter MRN, Davies BM, Kwon BK. Establishing Diagnostic Criteria for Degenerative Cervical Myelopathy [AO Spine RECODE-DCM Research Priority Number 3]. Global Spine J 2022; 12:55S-63S. [PMID: 35174729 PMCID: PMC8859706 DOI: 10.1177/21925682211030871] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
STUDY DESIGN Narrative review. OBJECTIVES To discuss the importance of establishing diagnostic criteria in Degenerative Cervical Myelopathy (DCM), including factors that must be taken into account and challenges that must be overcome in this process. METHODS Literature review summarising current evidence of establishing diagnostic criteria for DCM. RESULTS Degenerative Cervical Myelopathy (DCM) is characterised by a degenerative process of the cervical spine resulting in chronic spinal cord dysfunction and subsequent neurological disability. Diagnostic delays lead to progressive neurological decline with associated reduction in quality of life for patients. Surgical decompression may halt neurologic worsening and, in many cases, improves function. Therefore, making a prompt diagnosis of DCM in order to facilitate early surgical intervention is a clinical priority in DCM. CONCLUSION There are often extensive delays in the diagnosis of DCM. Presently, no single set of diagnostic criteria exists for DCM, making it challenging for clinicians to make the diagnosis. Earlier diagnosis and subsequent specialist referral could lead to improved patient outcomes using existing treatment modalities.
Collapse
Affiliation(s)
- Bryn Hilton
- Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Emma L. Gardner
- Colchester Hospital, East Suffolk and North Essex NHS Foundation Trust, Colchester, United Kingdom
| | - Zhilin Jiang
- Kings College Hospital, Kings College Hospital NHS Foundation Trust, London, United Kingdom
| | - Lindsay Tetreault
- Langone Health, Graduate Medical Education, Department of Neurology, New York University, NY, USA
| | - Jamie R. F. Wilson
- University of Nebraska Medical Center, Department of Neurosurgery, Omaha, Nebraska, USA
| | - Carl Moritz Zipser
- University Spine Center, Balgrist University Hospital, Zurich, Switzerland
| | - K. Daniel Riew
- Department of Orthopaedics, Columbia University Medical Center, The Och Spine Hospital at New York-Presbyterian, NY, USA
| | - James D. Guest
- Department of Neurosurgery and The Miami Project to Cure Paralysis, The Miller School of Medicine, University of Miami, Miami, FL, USA
| | - James S. Harrop
- Department of Neurological Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Ricardo Rodrigues-Pinto
- Department of Orthopaedics, Spinal Unit (UVM), Centro Hospitalar Universitário do Porto - Hospital de Santo António, Porto, Portugal
- Department of Orthopaedics, Instituto de CiM), Centro Hospital, Portugal
| | - Vafa Rahimi-Movaghar
- Department of Neurosurgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Paul A. Koljonen
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Mark R. N. Kotter
- Myelopathy.org, International Charity for Degenerative Cervical Myelopathy, United Kingdom
- Department of Neurosurgery, University of Cambridge, Cambridge, United Kingdom
| | - Benjamin M. Davies
- Myelopathy.org, International Charity for Degenerative Cervical Myelopathy, United Kingdom
- Department of Neurosurgery, University of Cambridge, Cambridge, United Kingdom
| | - Brian K. Kwon
- Department of Orthopaedics, University of British Columbia, Blusson Spinal Cord Center, Vancouver, British Columbia, Canada
| |
Collapse
|
45
|
Yanez Touzet A, Bhatti A, Dohle E, Bhatti F, Lee KS, Furlan JC, Fehlings MG, Harrop JS, Zipser CM, Rodrigues-Pinto R, Milligan J, Sarewitz E, Curt A, Rahimi-Movaghar V, Aarabi B, Boerger TF, Tetreault L, Chen R, Guest JD, Kalsi-Ryan S, McNair AG, Kotter M, Davies B. Clinical outcome measures and their evidence base in degenerative cervical myelopathy: a systematic review to inform a core measurement set (AO Spine RECODE-DCM). BMJ Open 2022; 12:e057650. [PMID: 35046007 PMCID: PMC8772430 DOI: 10.1136/bmjopen-2021-057650] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/22/2021] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES To evaluate the measurement properties of outcome measures currently used in the assessment of degenerative cervical myelopathy (DCM) for clinical research. DESIGN Systematic review DATA SOURCES: MEDLINE and EMBASE were searched through 4 August 2020. ELIGIBILITY CRITERIA Primary clinical research published in English and whose primary purpose was to evaluate the measurement properties or clinically important differences of instruments used in DCM. DATA EXTRACTION AND SYNTHESIS Psychometric properties and clinically important differences were both extracted from each study, assessed for risk of bias and presented in accordance with the Consensus-based Standards for the selection of health Measurement Instruments criteria. RESULTS Twenty-nine outcome instruments were identified from 52 studies published between 1999 and 2020. They measured neuromuscular function (16 instruments), life impact (five instruments), pain (five instruments) and radiological scoring (five instruments). No instrument had evaluations for all 10 measurement properties and <50% had assessments for all three domains (ie, reliability, validity and responsiveness). There was a paucity of high-quality evidence. Notably, there were no studies that reported on structural validity and no high-quality evidence that discussed content validity. In this context, we identified nine instruments that are interpretable by clinicians: the arm and neck pain scores; the 12-item and 36-item short form health surveys; the Japanese Orthopaedic Association (JOA) score, modified JOA and JOA Cervical Myelopathy Evaluation Questionnaire; the neck disability index; and the visual analogue scale for pain. These include six scores with barriers to application and one score with insufficient criterion and construct validity. CONCLUSIONS This review aggregates studies evaluating outcome measures used to assess patients with DCM. Overall, there is a need for a set of agreed tools to measure outcomes in DCM. These findings will be used to inform the development of a core measurement set as part of AO Spine RECODE-DCM.
Collapse
Affiliation(s)
- Alvaro Yanez Touzet
- School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, Manchester, UK
| | - Aniqah Bhatti
- School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | - Esmee Dohle
- School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | - Faheem Bhatti
- School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | - Keng Siang Lee
- Bristol Medical School, Faculty of Health Sciences, University of Bristol, Bristol, UK
| | - Julio C Furlan
- Department of Medicine, Division of Physical Medicine and Rehabilita, University of Toronto, Toronto, Ontario, Canada
- Division of Physical Medicine and Rehabilitation, Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- KITE Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Michael G Fehlings
- Division of Neurosurgery and Spinal Program, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada
| | - James S Harrop
- Thomas Jefferson University, Jefferson Health System, St Louis, Philadelphia, USA
| | - Carl Moritz Zipser
- Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland
| | - Ricardo Rodrigues-Pinto
- Spinal Unit (UVM), Department of Orthopaedics, Centro Hospitalar Universitário do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Porto, Portugal
| | - James Milligan
- Department of Family Medicine, McMaster University, Hamilton, Ontario, Canada
| | | | - Armin Curt
- Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland
| | - Vafa Rahimi-Movaghar
- Academic Department of Neurological Surgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Tehran, Iran
| | - Bizhan Aarabi
- Division of Neurosurgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Timothy F Boerger
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Lindsay Tetreault
- Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Robert Chen
- Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada
- Krembil Research Institute, Toronto, Ontario, Canada
| | - James D Guest
- Department of Neurological Surgery and The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, Florida, USA
| | | | - Angus Gk McNair
- Centre for Surgical Research, Bristol Medical School: Population Health Sciences, University of Bristol, Bristol, Avon, UK
- GI Surgery, North Bristol NHS Trust, Bristol, UK
| | - Mark Kotter
- Department of Clinical Neurosurgery, University of Cambridge, Cambridge, UK
- Department of Clinical Neurosciences, Ann McLaren Laboratory of Regenerative Medicine, Cambridge, UK
| | - Benjamin Davies
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| |
Collapse
|
46
|
Fehlings MG, Chen Y, Aarabi B, Ahmad F, Anderson KD, Dumont T, Fourney DR, Harrop JS, Kim KD, Kwon BK, Lingam HK, Rizzo M, Shih LC, Tsai EC, Vaccaro A, McKerracher L. A Randomized Controlled Trial of Local Delivery of a Rho Inhibitor (VX-210) in Patients with Acute Traumatic Cervical Spinal Cord Injury. J Neurotrauma 2021; 38:2065-2072. [PMID: 33559524 PMCID: PMC8309435 DOI: 10.1089/neu.2020.7096] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Acute traumatic spinal cord injury (SCI) can result in severe, lifelong neurological deficits. After SCI, Rho activation contributes to collapse of axonal growth cones, failure of axonal regeneration, and neuronal loss. This randomized, double-blind, placebo-controlled phase 2b/3 study evaluated the efficacy and safety of Rho inhibitor VX-210 (9 mg) in patients after acute traumatic cervical SCI. The study enrolled patients 14-75 years of age with acute traumatic cervical SCIs, C4-C7 (motor level) on each side, and American Spinal Injury Association Impairment Scale (AIS) Grade A or B who had spinal decompression/stabilization surgery commencing within 72 h after injury. Patients were randomized 1:1 with stratification by age (<30 vs. ≥30 years) and AIS grade (A vs. B with sacral pinprick preservation vs. B without sacral pinprick preservation). A single dose of VX-210 or placebo in fibrin sealant was administered topically onto the dura over the site of injury during decompression/stabilization surgery. Patients were evaluated for medical, neurological, and functional changes, and serum was collected for pharmacokinetics and immunological analyses. Patients were followed up for up to 12 months after treatment. A planned interim efficacy-based futility analysis was conducted after ∼33% of patients were enrolled. The pre-defined futility stopping rule was met, and the study was therefore ended prematurely. In the final analysis, the primary efficacy end-point was not met, with no statistically significant difference in change from baseline in upper-extremity motor score at 6 months after treatment between the VX-210 (9-mg) and placebo groups. This work opens the door to further improvements in the design and conduct of clinical trials in acute SCI.
Collapse
Affiliation(s)
- Michael G Fehlings
- Division of Neurosurgery and Spine Program, University of Toronto and Toronto Western Hospital, Toronto, Ontario, Canada
| | - Yang Chen
- Vertex Pharmaceuticals Incorporated, Boston, Massachusetts, USA
| | | | - Faiz Ahmad
- Department of Neurosurgery, Emory University, Atlanta, Georgia, USA
| | | | - Travis Dumont
- Neurovascular Surgery Program, University of Arizona College of Medicine, Tucson, Arizona, USA
| | - Daryl R Fourney
- Neurosurgery, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - James S Harrop
- Division of Spine and Peripheral Nerve Surgery, Thomas Jefferson University Hospitals, Philadelphia, Pennsylvania, USA
| | - Kee D Kim
- University of California Davis Health, Sacramento, California, USA
| | - Brian K Kwon
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Hari K Lingam
- Vertex Pharmaceuticals Incorporated, Boston, Massachusetts, USA
| | - Marco Rizzo
- Vertex Pharmaceuticals Incorporated, Boston, Massachusetts, USA
| | - Ludy C Shih
- Vertex Pharmaceuticals Incorporated, Boston, Massachusetts, USA
| | - Eve C Tsai
- The Ottawa Hospital, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada
| | | | - Lisa McKerracher
- BioAxone BioSciences, Inc, Boston, Massachusetts, USA
- McGill University, Montreal, Quebec, Canada
| |
Collapse
|
47
|
Nguyen A, Chow DSL, Wu L, Teng YA, Sarkar M, Toups EG, Harrop JS, Schmitt KM, Johnson MM, Guest JD, Aarabi B, Shaffrey CI, Boakye M, Frankowski RF, Fehlings MG, Grossman RG. Longitudinal Impact of Acute Spinal Cord Injury on Clinical Pharmacokinetics of Riluzole, a Potential Neuroprotective Agent. J Clin Pharmacol 2021; 61:1232-1242. [PMID: 33908635 PMCID: PMC8457124 DOI: 10.1002/jcph.1876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 04/18/2021] [Indexed: 11/09/2022]
Abstract
Riluzole, a benzothiazole sodium channel blocker that received US Food and Drug Administration approval to attenuate neurodegeneration in amyotrophic lateral sclerosis in 1995, was found to be safe and potentially efficacious in a spinal cord injury (SCI) population, as evident in a phase I clinical trial. The acute and progressive nature of traumatic SCI and the complexity of secondary injury processes can alter the pharmacokinetics of therapeutics. A 1-compartment with first-order elimination population pharmacokinetic model for riluzole incorporating time-dependent clearance and volume of distribution was developed from combined data of the phase 1 and the ongoing phase 2/3 trials. This change in therapeutic exposure may lead to a biased estimate of the exposure-response relationship when evaluating therapeutic effects. With the developed model, a rational, optimal dosing scheme can be designed with time-dependent modification that preserves the required therapeutic exposure of riluzole.
Collapse
Affiliation(s)
- Ashley Nguyen
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, USA
| | - Diana S-L Chow
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, USA
| | - Lei Wu
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, USA
| | - Yang Angela Teng
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, USA.,Covance, Madison, Wisconsin, USA
| | - Mahua Sarkar
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas, USA
| | - Elizabeth G Toups
- Department of Neurosurgery, Houston Methodist Research Institute, Houston, Texas, USA
| | - James S Harrop
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Karl M Schmitt
- Department of Neurosurgery, Health Science Center, University of Texas, Houston, Texas, USA
| | - Michele M Johnson
- Department of Neurosurgery, Health Science Center, University of Texas, Houston, Texas, USA.,Atlanta Brain and Spine Care, Atlanta, Georgia, USA
| | - James D Guest
- Department of Neurological Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Bizhan Aarabi
- Department of Neurosurgery, University of Maryland, Baltimore, Maryland, USA
| | - Christopher I Shaffrey
- Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia, USA.,Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina, USA
| | - Maxwell Boakye
- Department of Neurosurgery, University of Louisville, Louisville, Kentucky, USA
| | - Ralph F Frankowski
- Late colleague, Division of Biostatistics, University of Texas School of Public Health, Houston, Texas, USA
| | - Michael G Fehlings
- Division of Neurosurgery and Spine Program, Toronto Western Hospital, University of, Toronto, Ontario, Canada
| | - Robert G Grossman
- Department of Neurosurgery, Houston Methodist Research Institute, Houston, Texas, USA
| |
Collapse
|
48
|
Davies BM, Mowforth OD, Khan DZ, Yang X, Stacpoole SRL, Hazenbiller O, Gronlund T, Tetreault L, Kalsi-Ryan S, Starkey ML, Sadler I, Sarewitz E, Houlton D, Carter J, Howard E, Rahimi-Movaghar V, Guest JD, Aarabi B, Kwon BK, Kurpad SN, Harrop J, Wilson JR, Grossman R, Smith EK, McNair AGK, Fehlings MG, Kotter MRN. The development of lived experience-centered word clouds to support research uncertainty gathering in degenerative cervical myelopathy: results from an engagement process and protocol for their evaluation, via a nested randomized controlled trial. Trials 2021; 22:415. [PMID: 34172080 PMCID: PMC8235822 DOI: 10.1186/s13063-021-05349-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 06/01/2021] [Indexed: 01/17/2023] Open
Abstract
OBJECTIVES AO Spine REsearch objectives and Common Data Elements for Degenerative Cervical Myelopathy [RECODE-DCM] is a multi-stakeholder consensus process aiming to promote research efficiency in DCM. It aims to establish the top 10 research uncertainties, through a James Lind Alliance Priority Setting Partnership [PSP]. Through a consensus process, research questions are generated and ranked. The inclusion of people with cervical myelopathy [PwCM] is central to the process. We hypothesized that presenting PwCM experience through word cloud generation would stimulate other key stakeholders to generate research questions better aligned with PwCM needs. This protocol outlines our plans to evaluate this as a nested methodological study within our PSP. METHODS An online poll asked PwCM to submit and vote on words associated with aspects of DCM. After review, a refined word list was re-polled for voting and word submission. Word clouds were generated and an implementation plan for AO Spine RECODE-DCM PSP surveys was subsequently developed. RESULTS Seventy-nine terms were submitted after the first poll. Eighty-seven refined words were then re-polled (which added a further 39 words). Four word clouds were generated under the categories of diagnosis, management, long-term effects, and other. A 1:1 block randomization protocol to assess word cloud impact on the number and relevance of PSP research questions was generated. CONCLUSIONS We have shown it is feasible to work with PwCM to generate a tool for the AO Spine RECODE-DCM nested methodological study. Once the survey stage is completed, we will be able to evaluate the impact of the word clouds. Further research will be needed to assess the value of any impact in terms of stimulating a more creative research agenda.
Collapse
Affiliation(s)
- Benjamin M Davies
- Academic Neurosurgery Unit & Anne McLaren Laboratory of Regenerative Medicine, Department of Clinical Neurosurgery, University of Cambridge, Cambridge, UK
| | - Oliver D Mowforth
- Academic Neurosurgery Unit & Anne McLaren Laboratory of Regenerative Medicine, Department of Clinical Neurosurgery, University of Cambridge, Cambridge, UK
| | - Danyal Z Khan
- Academic Neurosurgery Unit & Anne McLaren Laboratory of Regenerative Medicine, Department of Clinical Neurosurgery, University of Cambridge, Cambridge, UK
| | - Xiaoyu Yang
- Academic Neurosurgery Unit & Anne McLaren Laboratory of Regenerative Medicine, Department of Clinical Neurosurgery, University of Cambridge, Cambridge, UK
| | - Sybil R L Stacpoole
- Department of Clinical Neuroscience, Peterborough Hospital, North West Anglia NHS Foundation Trust and Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge, UK
| | | | - Toto Gronlund
- James Lind Alliance, National Institute for Health Research, Southampton, UK
| | - Lindsay Tetreault
- Division of Neurosurgery, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Sukhvinder Kalsi-Ryan
- Toronto Rehabilitation Institute-LC, University Health Network, Toronto, Ontario, Canada
| | - Michelle L Starkey
- Academic Neurosurgery Unit & Anne McLaren Laboratory of Regenerative Medicine, Department of Clinical Neurosurgery, University of Cambridge, Cambridge, UK
| | - Iwan Sadler
- Myelopathy.org (Registered Charity England and Wales, No 1178673), Cambridge, UK
| | - Ellen Sarewitz
- The Goffin Consultancy, Goffin Consultancy Ltd, Riding House, Bossingham Road, Stelling Minnis, Canterbury, CT4 6AZ, UK
| | - Delphine Houlton
- Myelopathy.org (Registered Charity England and Wales, No 1178673), Cambridge, UK
| | - Julia Carter
- Myelopathy.org (Registered Charity England and Wales, No 1178673), Cambridge, UK
| | | | - Vafa Rahimi-Movaghar
- Academic Department of Neurological Surgery, Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - James D Guest
- Department of Neurological Surgery, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Bizhan Aarabi
- Division of Neurosurgery, Shock Trauma, University of Maryland, Baltimore, MD, USA
| | - Brian K Kwon
- Division of Spine Surgery, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Shekar N Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - James Harrop
- Division of Neurosurgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Jefferson R Wilson
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Robert Grossman
- Division of Neurosurgery, Houston Methodist Hospital, Houston, TX, USA
| | - Emma K Smith
- School of General Practice, NHS Health Education East of England, Cambridge, UK
| | - Angus G K McNair
- Center for Surgical Research, Bristol Medical School: Population Health Sciences, University of Bristol, Bristol, UK
| | - Michael G Fehlings
- Division of Neurosurgery, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Mark R N Kotter
- Academic Neurosurgery Unit & Anne McLaren Laboratory of Regenerative Medicine, Department of Clinical Neurosurgery, University of Cambridge, Cambridge, UK. .,Wellcome Trust & MRC Cambridge Stem Cell Institute, Cambridge, UK.
| |
Collapse
|
49
|
Jaja BNR, Badhiwala J, Guest J, Harrop J, Shaffrey C, Boakye M, Kurpad S, Grossman R, Toups E, Geisler F, Kwon B, Aarabi B, Kotter M, Fehlings MG, Wilson JR. Trajectory-Based Classification of Recovery in Sensorimotor Complete Traumatic Cervical Spinal Cord Injury. Neurology 2021; 96:e2736-e2748. [PMID: 33849991 DOI: 10.1212/wnl.0000000000012028] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 03/01/2021] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To test the hypothesis that sensorimotor complete traumatic cervical spinal cord injury (SCI) is a heterogenous clinical entity comprising several subpopulations that follow fundamentally different trajectories of neurologic recovery. METHODS We analyzed demographic and injury data from 655 patients who were pooled from 4 prospective longitudinal multicenter studies. Group-based trajectory modeling was applied to model neurologic recovery trajectories over the initial 12 months postinjury and to identify predictors of recovery trajectories. Neurologic outcomes included upper extremity motor score, total motor scores, and American Spinal Injury Association Impairment Scale (AIS) grade improvement. RESULTS The analysis identified 3 distinct trajectories of neurologic recovery. These clinical courses included (1) marginal recovery trajectory, characterized by minimal or no improvement in motor strength or change in AIS grade status (remained grade A); (2) moderate recovery trajectory, characterized by low baseline motor scores that improved approximately 13 points or AIS conversion of 1 grade point; (3) good recovery trajectory, characterized by baseline motor scores in the upper quartile that improved to near maximum values within 3 months of injury. Patients following the moderate or good recovery trajectories were younger, had more caudally located injuries, had a higher degree of preserved motor and sensory function at baseline examination, and exhibited a greater extent of motor and sensory function in the zone of partial preservation. CONCLUSION Cervical complete SCI can be classified into one of 3 distinct subpopulations with fundamentally different trajectories of neurologic recovery. This study defines unique clinical phenotypes based on potential for recovery, rather than baseline severity of injury alone. This approach may prove beneficial in clinical prognostication and in the design and interpretation of clinical trials in SCI.
Collapse
Affiliation(s)
- Blessing N R Jaja
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Jetan Badhiwala
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - James Guest
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - James Harrop
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Chris Shaffrey
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Max Boakye
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Shekar Kurpad
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Robert Grossman
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Elizabeth Toups
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Fred Geisler
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Brian Kwon
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Bizhan Aarabi
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Mark Kotter
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Michael G Fehlings
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK
| | - Jefferson R Wilson
- From the Division of Neurosurgery and Spine Program (B.N.R.J., M.G.F.), Toronto Western Hospital, Division of Neurosurgery and Spine Program (J.B.), and Division of Neurosurgery and Spine Program, St. Michael's Hospital (J.R.W.), University of Toronto, Canada; Division of Neurosurgery (J.G.), University of Miami, FL; Division of Neurosurgery (J.H.), Thomas Jefferson University Hospital, Philadelphia, PA; Duke Spine Division (C.S.), Duke University School of Medicine, Durham, NC; Division of Neurosurgery (M.B.), University of Louisville, KY; Division of Neurosurgery (S.K.), Medical College of Wisconsin, Milwaukee; Division of Neurosurgery (R.G., E.T.), Methodist Hospital, Houston, TX; Chicago Institute of Neurosurgery and Neuroresearch (F.G.), Rush University, IL; Division of Spine Surgery (B.K.), Vancouver General Hospital, University of British Columbia, Canada; Division of Neurosurgery, Shock Trauma (B.A.), University of Maryland, Baltimore; and Division of Neurosurgery, Department of Clinical Neurosciences (M.K.), University of Cambridge, UK.
| |
Collapse
|
50
|
Aarabi B, Akhtar-Danesh N, Simard JM, Chryssikos T, Shanmuganathan K, Olexa J, Sansur CA, Crandall KM, Wessell AP, Cannarsa G, Sharma A, Lomangino CD, Boulter J, Scarboro M, Oliver J, Ahmed AK, Wenger N, Serra R, Shea P, Schwartzbauer GT. Efficacy of Early (≤ 24 Hours), Late (25-72 Hours), and Delayed (>72 Hours) Surgery with Magnetic Resonance Imaging-Confirmed Decompression in American Spinal Injury Association Impairment Scale Grades C and D Acute Traumatic Central Cord Syndrome Caused by Spinal Stenosis. J Neurotrauma 2021; 38:2073-2083. [PMID: 33726507 PMCID: PMC8309437 DOI: 10.1089/neu.2021.0040] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The therapeutic significance of timing of decompression in acute traumatic central cord syndrome (ATCCS) caused by spinal stenosis remains unsettled. We retrospectively examined a homogenous cohort of patients with ATCCS and magnetic resonance imaging (MRI) evidence of post-treatment spinal cord decompression to determine whether timing of decompression played a significant role in American Spinal Injury Association (ASIA) motor score (AMS) 6 months following trauma. We used the t test, analysis of variance, Pearson correlation coefficient, and multiple regression for statistical analysis. During a 19-year period, 101 patients with ATCCS, admission ASIA Impairment Scale (AIS) grades C and D, and an admission AMS of ≤95 were surgically decompressed. Twenty-four of 101 patients had an AIS grade C injury. Eighty-two patients were males, the mean age of patients was 57.9 years, and 69 patients had had a fall. AMS at admission was 68.3 (standard deviation [SD] 23.4); upper extremities (UE) 28.6 (SD 14.7), and lower extremities (LE) 41.0 (SD 12.7). AMS at the latest follow-up was 93.1 (SD 12.8), UE 45.4 (SD 7.6), and LE 47.9 (SD 6.6). Mean number of stenotic segments was 2.8, mean canal compromise was 38.6% (SD 8.7%), and mean intramedullary lesion length (IMLL) was 23 mm (SD 11). Thirty-six of 101 patients had decompression within 24 h, 38 patients had decompression between 25 and 72 h, and 27 patients had decompression >72 h after injury. Demographics, etiology, AMS, AIS grade, morphometry, lesion length, surgical technique, steroid protocol, and follow-up AMS were not statistically different between groups treated at different times. We analyzed the effect size of timing of decompression categorically and in a continuous fashion. There was no significant effect of the timing of decompression on follow-up AMS. Only AMS at admission determined AMS at follow-up (coefficient = 0.31; 95% confidence interval [CI]:0.21; p = 0.001). We conclude that timing of decompression in ATCCS caused by spinal stenosis has little bearing on ultimate AMS at follow-up.
Collapse
Affiliation(s)
- Bizhan Aarabi
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA.,R. Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Noori Akhtar-Danesh
- School of Nursing and Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - J Marc Simard
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Timothy Chryssikos
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | | | - Joshua Olexa
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Charles A Sansur
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Kenneth M Crandall
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Aaron P Wessell
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Gregory Cannarsa
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Ashish Sharma
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Cara D Lomangino
- R. Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jason Boulter
- Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Maureen Scarboro
- R. Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jeffrey Oliver
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Abdul Kareem Ahmed
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Nicole Wenger
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Riccardo Serra
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Phelan Shea
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Gary T Schwartzbauer
- Department of Neurosurgery and University of Maryland School of Medicine, Baltimore, Maryland, USA.,R. Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| |
Collapse
|