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Arora A, Cummins DD, Wague A, Mendelis J, Samtani R, McNeill I, Theologis AA, Mummaneni PV, Berven S. Preoperative medical assessment for adult spinal deformity surgery: a state-of-the-art review. Spine Deform 2023; 11:773-785. [PMID: 36811703 PMCID: PMC10261200 DOI: 10.1007/s43390-023-00654-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 01/21/2023] [Indexed: 02/24/2023]
Abstract
INTRODUCTION The purpose of this study is to provide a state-of-the-art review regarding risk factors for perioperative complications in adult spinal deformity (ASD) surgery. The review includes levels of evidence for risk factors associated with complications in ASD surgery. METHODS Using the PubMed database, we searched for complications, risk factors, and adult spinal deformity. The included publications were assessed for level of evidence as described in clinical practice guidelines published by the North American Spine Society, with summary statements generated for each risk factor (Bono et al. in Spine J 9:1046-1051, 2009). RESULTS Frailty had good evidence (Grade A) as a risk for complications in ASD patients. Fair evidence (Grade B) was assigned for bone quality, smoking, hyperglycemia and diabetes, nutritional status, immunosuppression/steroid use, cardiovascular disease, pulmonary disease, and renal disease. Indeterminate evidence (Grade I) was assigned for pre-operative cognitive function, mental health, social support, and opioid utilization. CONCLUSIONS Identification of risk factors for perioperative complications in ASD surgery is a priority for empowering informed choices for patients and surgeons and managing patient expectations. Risk factors with grade A and B evidence should be identified prior to elective surgery and modified to reduce the risk of perioperative complications.
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Affiliation(s)
- Ayush Arora
- Department of Orthopaedic Surgery, University of California - San Francisco UCSF, 500 Parnassus Ave, MUW320W, San Francisco, CA, 4143-0728, USA
| | - Daniel D Cummins
- Department of Orthopaedic Surgery, University of California - San Francisco UCSF, 500 Parnassus Ave, MUW320W, San Francisco, CA, 4143-0728, USA
| | - Aboubacar Wague
- Department of Orthopaedic Surgery, University of California - San Francisco UCSF, 500 Parnassus Ave, MUW320W, San Francisco, CA, 4143-0728, USA
| | - Joseph Mendelis
- Department of Orthopaedic Surgery, University of California - San Francisco UCSF, 500 Parnassus Ave, MUW320W, San Francisco, CA, 4143-0728, USA
| | - Rahul Samtani
- Department of Orthopaedic Surgery, University of California - San Francisco UCSF, 500 Parnassus Ave, MUW320W, San Francisco, CA, 4143-0728, USA
| | - Ian McNeill
- Department of Orthopaedic Surgery, University of California - San Francisco UCSF, 500 Parnassus Ave, MUW320W, San Francisco, CA, 4143-0728, USA
| | - Alekos A Theologis
- Department of Orthopaedic Surgery, University of California - San Francisco UCSF, 500 Parnassus Ave, MUW320W, San Francisco, CA, 4143-0728, USA
| | - Praveen V Mummaneni
- Department of Neurological Surgery, University California, San Francisco, San Francisco, CA, USA
| | - Sigurd Berven
- Department of Orthopaedic Surgery, University of California - San Francisco UCSF, 500 Parnassus Ave, MUW320W, San Francisco, CA, 4143-0728, USA.
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Schmerler J, Mo KC, Olson J, Kurian SJ, Skolasky RL, Kebaish KM, Neuman BJ. Preoperative characteristics are associated with increased likelihood of low early postoperative mobility after adult spinal deformity surgery. Spine J 2022; 23:746-753. [PMID: 36509380 DOI: 10.1016/j.spinee.2022.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/12/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND CONTEXT Low early postoperative mobility (LEPOM) has been shown to be associated with increased length of hospital stay, complication rates, and likelihood of nonhome discharge. However, few studies have examined preoperative characteristics associated with LEPOM in adult spinal deformity (ASD) patients. PURPOSE To investigate which preoperative patient characteristics may be associated with LEPOM after ASD surgery. DESIGN Retrospective review. PATIENT SAMPLE Included were 86 ASD patients with fusion of ≥5 levels for whom immediate-postoperative AM-PAC Basic Mobility Inpatient Short Form (6-Clicks) scores had been obtained. OUTCOME MEASURES The primary outcome of this study was the likelihood of LEPOM, defined as an AM-PAC score ≤15, which is associated with inability to stand for more than 1 minute. METHODS Significant cutoffs for preoperative characteristics associated with LEPOM were determined via threshold linear regression. Multivariable logistic regression was used to assess the impact of preoperative characteristics on the likelihood of LEPOM. RESULTS LEPOM was recorded in 38 patients (44.2%). Threshold regression identified the following cutoffs to be associated with LEPOM: preoperative Patient Reported Outcomes Measurement Information System (PROMIS) scores of ≥68 for Pain, <28.3 for Physical Function, and ≥63.4 for Anxiety; preoperative Oswestry disability index (ODI) score of ≥60; and body mass index (BMI) of ≥35.2. On multivariate analysis, preoperative PROMIS scores of ≥68 for Pain (odds ratio [OR] 5.3, confidence interval [CI] 1.2-22.8, p=.03), <28.3 for Physical Function (OR 10.1, CI 1.8-58.2, p=.01), and ≥63.4 for Anxiety (OR 4.7, CI 1.1-20.8, p=.04); preoperative ODI score ≥60 (OR 38.8, CI 4.0-373.6, p=.002); BMI ≥35.2 (OR 14.2, CI 1.3-160.0, p=.03), and male sex (OR 5.4, CI 1.2-23.7, p=.03) were associated with increased odds of LEPOM. CONCLUSIONS Preoperative PROMIS Pain, Physical Function, and Anxiety scores; ODI score; BMI; and male sex were associated with LEPOM. Several of these characteristics are modifiable risk factors and thus may be candidates for optimization before surgery. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Jessica Schmerler
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Kevin C Mo
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jarod Olson
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Shyam J Kurian
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Richard L Skolasky
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Khaled M Kebaish
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Brian J Neuman
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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Assessing the Effects of Prior History of Vertebral Osteomyelitis on Peri-Operative Factors and Post-Operative Recovery in Adult Spinal Deformity Patients. J Clin Med 2022; 11:jcm11216488. [DOI: 10.3390/jcm11216488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 10/19/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022] Open
Abstract
Vertebral osteomyelitis (VOM), which includes the clinical entities of spinal osteomyelitis, spondylodiscitis, or pyogenic spondylitis, describes a complex inflammatory reaction within the vertebral column in the setting of microbial infection [...]
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Eason JA, Vandal A, Patel AU. Impact of body mass index on total cost of trauma and elective spine surgical procedures at a quaternary spinal referral centre. ANZ J Surg 2022; 92:2984-2989. [DOI: 10.1111/ans.18104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 01/30/2022] [Accepted: 09/29/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Josephine A. Eason
- Department of Surgery University of Otago Medical School Dunedin New Zealand
| | - Alain Vandal
- Department of Statistics University of Auckland Auckland New Zealand
- Ko Awatea Research and Evaluation Office Counties Manukau Health Auckland New Zealand
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The biomechanical fundamentals of crosslink-augmentation in posterior spinal instrumentation. Sci Rep 2022; 12:7621. [PMID: 35538122 PMCID: PMC9090827 DOI: 10.1038/s41598-022-11719-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 04/13/2022] [Indexed: 11/17/2022] Open
Abstract
Posterior screw-rod constructs can be used to stabilize spinal segments; however, the stiffness is not absolute, and some motion can persist. While the effect of crosslink-augmentation has been evaluated in multiple studies, the fundamental explanation of their effectiveness has not been investigated. The aim of this study was to quantify the parameters “screw rotation” and “parallelogram deformation” in posterior instrumentations with and without crosslinks to analyze and explain their fundamental effect. Biomechanical testing of 15 posteriorly instrumented human spinal segments (Th10/11—L4/L5) was conducted in axial rotation, lateral bending, and flexion–extension with ± 7.5 Nm. Screw rotation and parallelogram deformation were compared for both configurations. Parallelogram deformation occurred predominantly during axial rotation (2.6°) and was reduced by 60% (−1.45°, p = 0.02) by the addition of a crosslink. Simultaneously, screw rotation (0.56°) was reduced by 48% (−0.27°, p = 0.02) in this loading condition. During lateral bending, 0.38° of parallelogram deformation and 1.44° of screw rotation was measured and no significant reduction was achieved by crosslink-augmentation (8%, −0.03°, −p = 0.3 and −13%, −0.19°, p = 0.7 respectively). During flexion–extension, parallelogram deformation was 0.4° and screw rotation was 0.39° and crosslink-augmentation had no significant effect on these values (−0.12°, −30%, p = 0.5 and −0°, −0%, p = 0.8 respectively). In axial rotation, crosslink-augmentation can reduce parallelogram deformation and with that, screw rotation. In lateral bending and flexion–extension parallelogram deformation is minimal and crosslink-augmentation has no significant effect. Since the relatively large screw rotation in lateral bending is not caused by parallelogram deformation, crosslink-augmentation is no adequate countermeasure. The fundamental understanding of the biomechanical effect of crosslink-augmentation helps better understand its potential and limitations in increasing construct stiffness.
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Perioperative Predictive Factors for Positive Outcomes in Spine Fusion for Adult Deformity Correction. J Clin Med 2021; 11:jcm11010144. [PMID: 35011885 PMCID: PMC8745190 DOI: 10.3390/jcm11010144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 12/21/2021] [Accepted: 12/26/2021] [Indexed: 11/16/2022] Open
Abstract
Purpose: Identifying perioperative factors that may influence the outcomes of long spine fusion for the treatment of adult deformity is key for tailored surgical planning and targeted informed consent. The aim of this study was to analyze the association between demographic or perioperative factors and clinical outcomes 2 years after long spine fusion for the treatment of adult deformity. Methods: This study is a multivariate analysis of retrospectively collected data. All patients who underwent long fusion of the lumbar spine for adult spinal deformity (January 2016–June 2019) were included. The outcomes of interest were the Oswestry disability index (ODI), visual analogic scale (VAS) preoperatively and at 1 and 2 years’ follow up, age, body mass index, American Society of Anaesthesiologists (ASA) score, upper and lowest instrumented vertebrae (UIV and LIV, respectively), length of surgery, estimated blood loss, and length of hospital stay. Results: Data from 192 patients were available. The ODI at 2 years correlated weakly to moderately with age (r = 0.4), BMI (r = 0.2), ASA (r = 0.3), and LIV (r = 0.2), and strongly with preoperative ODI (r = 0.6). The leg VAS at 2 years moderately correlated with age (r = 0.3) and BMI (r = 0.3). Conclusion: ODI and VAS at 2 years’ follow-up had no to little association to preoperative age, health status, LIV, or other peroperative data, but showed a strong correlation with preoperative ODI and pain level.
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Paranjape CS, Gentry RD, Regan CM. Cost-Effectiveness of Bariatric Surgery Prior to Posterior Lumbar Decompression and Fusion in an Obese Population with Degenerative Spondylolisthesis. Spine (Phila Pa 1976) 2021; 46:950-957. [PMID: 33428363 DOI: 10.1097/brs.0000000000003940] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Cost-effectiveness analysis. OBJECTIVE To determine if bariatric surgery prior to posterior lumbar decompression and fusion (PLDF) for degenerative spondylolisthesis (DS) is a cost-effective strategy. SUMMARY OF BACKGROUND DATA Obesity poses significant perioperative challenges for DS. Treated operatively, obese patients achieve worse outcomes relative to non-obese peers. Concomitantly, they fare better with surgery than with nonoperative measures. These competing facts create uncertainty in determining optimal treatment algorithms for obese patients with DS. The role of bariatric surgery merits investigation as a potentially cost-effective optimization strategy prior to PLDF. METHODS We simulated a Markov model with two cohorts of obese individuals with DS. 10,000 patients with body mass index (BMI) more than or equal to 30 in both arms were candidates for both bariatric surgery and PLDF. Subjects were assigned either to (1) no weight loss intervention with immediate operative or nonoperative management ("traditional arm") or (2) bariatric surgery 2 years prior to entering the same management options ("combined protocol").Published costs, utilities, and transition probabilities from the literature were applied. A willingness to pay threshold of $100,000/QALY was used. Sensitivity analyses were run for all variables to assess the robustness of the model. RESULTS Over a 10-year horizon, the combined protocol was dominant ($13,500 cheaper, 1.15 QALY more effective). Changes in utilities of operative and nonoperative treatments in non-obese patients, the obesity cost-multiplier, cost of bariatric surgery, and the probability of success of nonoperative treatment in obese patients led to decision changes. However, all thresholds occurred outside published bounds for these variables. CONCLUSION The combined protocol was less costly and more effective than the traditional protocol. Results were robust with thresholds occurring outside published ranges. Bariatric surgery is a viable, cost-effective preoperative strategy in obese patients considering elective PLDF for DS.Level of Evidence: 3.
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Affiliation(s)
- Chinmay S Paranjape
- Department of Orthopaedic Surgery, University of North Carolina, Chapel Hill, NC
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Dinizo M, Raman T. CORR Synthesis: What Is the Evidence for Age-appropriate Alignment Goals in Surgery for Adult Spinal Deformity? Clin Orthop Relat Res 2021; 479:246-250. [PMID: 32947289 PMCID: PMC7899596 DOI: 10.1097/corr.0000000000001382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 06/04/2020] [Indexed: 01/31/2023]
Affiliation(s)
- Michael Dinizo
- M. Dinizo, T. Raman, Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, New York, NY, USA
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Sedney CL, Dekeseredy P, Haggerty T. Stigmatizing Diagnoses in Neurosurgery: A Narrative Review. World Neurosurg 2020; 145:25-34. [PMID: 32889195 DOI: 10.1016/j.wneu.2020.08.183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/24/2020] [Accepted: 08/25/2020] [Indexed: 11/18/2022]
Abstract
Stigma is defined as a social process resulting in labeling, stereotyping, and separation that cause status loss, disapproval, rejection, exclusion, and discrimination of the labeled individuals. Stigma can be experienced by individuals or groups, can be real or perceived, and can include a wide array of characteristics (e.g., race/ethnicity, gender, and health conditions). It is well documented that stigma for health conditions is a barrier to treatment and leads to worse outcomes for vulnerable people. The purpose of this study is to examine the increasingly mature field of stigma theory and research, and how this relates to the practice of neurosurgery. This review provides an overview of stigma and its application in a neurosurgical setting, including diagnoses treated by neurosurgeons as well as diagnoses with impact on neurosurgical outcomes. Examples of stigmatizing diagnoses of relevance to neurosurgical practice include epilepsy, pain, smoking, obesity, and substance use disorder. This information is useful for the practicing neurosurgeon to understand the origins and higher-order effects of societal perceptions surrounding certain diagnoses, and the subsequent effects on health that those perceptions can create on a systemic level.
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Affiliation(s)
- Cara L Sedney
- Department of Neurosurgery, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA.
| | - Patricia Dekeseredy
- Department of Neurosurgery, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Treah Haggerty
- Department of Family Medicine, West Virginia University, Morgantown, West Virginia, USA
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