1
|
Hill BG, Byrum T, Zhou A, Schilling PL. An Algorithmic Approach to Understanding Osteoarthritic Knee Pain. JB JS Open Access 2023; 8:e23.00039. [PMID: 37790197 PMCID: PMC10545400 DOI: 10.2106/jbjs.oa.23.00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/05/2023] Open
Abstract
Background Osteoarthritic knee pain is a complex phenomenon, and multiple factors, both within the knee and external to it, can contribute to how the patient perceives pain. We sought to determine how well a deep neural network could predict osteoarthritic knee pain and other symptoms solely from a single radiograph view. Methods We used data from the Osteoarthritis Initiative, a 10-year observational study of patients with knee osteoarthritis. We paired >50,000 weight-bearing, posteroanterior knee radiographs with corresponding Knee Injury and Osteoarthritis Outcome Score (KOOS) pain, symptoms, and activities of daily living subscores and used them to train a series of deep learning models to predict those scores solely from raw radiographic input. We created regression models for specific score predictions and classification models to predict whether the modeled KOOS subscore exceeded a range of thresholds. Results The root-mean-square errors were 15.7 for KOOS pain, 13.1 for KOOS symptoms, and 14.2 for KOOS activities of daily living. Modeling was performed to predict whether pain was above or below given pain thresholds, and was able to predict extreme pain (KOOS pain < 40) with an area under the curve (AUC) of 0.78. Notably, the system was also able to correctly predict numerous cases where the Kellgren-Lawrence (KL) grade assigned by the radiologist was 0 but patient pain was high, and cases where the KL grade was 4 but patient pain was low. Conclusions A deep neural network can be trained to predict the osteoarthritic knee pain that a patient experienced and other symptoms with reasonable accuracy from a single posteroanterior view of the knee, even using low-resolution images. The system can predict pain and dysfunction that the traditional KL grade does not capture. Deep learning applied to raw imaging inputs holds promise for disentangling sources of pain within the knee from aggravating factors external to the knee. Level of Evidence Diagnostic Level III. See Instructions for Authors for a complete description of levels of evidence.
Collapse
Affiliation(s)
- Brandon G Hill
- Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
| | - Travis Byrum
- The Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
| | - Anthony Zhou
- Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
| | - Peter L Schilling
- Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
- The Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
| |
Collapse
|
2
|
Hellmann A, Emmons A, Stewart Prime M, Paranjape K, Heaney DL. Digital Health: Today's Solutions and Tomorrow's Impact. Clin Lab Med 2023; 43:71-86. [PMID: 36764809 DOI: 10.1016/j.cll.2022.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Artificial intelligence (AI) is becoming an indispensable tool to augment decision making in different health care settings and by various members of the patient pathway, including the patient. AI provides the ability to optimize data to bring clinical decision support for clinicians and laboratorians and/or empower patients to actively participate in their own health care. Though there are many examples of AI in health care, the exact role of AI and digital health solutions is still taking shape. Although AI will not replace the clinician, those who do not adopt AI may in time, be left behind.
Collapse
Affiliation(s)
- Alison Hellmann
- Roche Diagnostics, 9115 Hague Road, Indianapolis, IN 46256, USA.
| | - Ashley Emmons
- Roche Diagnostics, 9115 Hague Road, Indianapolis, IN 46256, USA
| | - Matthew Stewart Prime
- Roche Information Solutions, Kornfeldstrasse 42, Riehen 4125, Basel Stadt, Switzerland
| | - Ketan Paranjape
- Roche Diagnostics, 9115 Hague Road, Indianapolis, IN 46256, USA
| | - Denise L Heaney
- Roche Diagnostics, 9115 Hague Road, Indianapolis, IN 46256, USA
| |
Collapse
|
3
|
Crawford AM, Striano BM, Simpson AK, Schoenfeld AJ. Support for a Unified Health Record to Combat Disparities in Health Care. J Bone Joint Surg Am 2022; 105:638-640. [PMID: 36730067 DOI: 10.2106/jbjs.22.01186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Alexander M Crawford
- Harvard Combined Orthopaedic Residency Program, Harvard Medical School, Boston, Massachusetts
| | - Brendan M Striano
- Harvard Combined Orthopaedic Residency Program, Harvard Medical School, Boston, Massachusetts
| | - Andrew K Simpson
- Department of Orthopaedic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Andrew J Schoenfeld
- Department of Orthopaedic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
4
|
Phenotype Diversity of Macrophages in Osteoarthritis: Implications for Development of Macrophage Modulating Therapies. Int J Mol Sci 2022; 23:ijms23158381. [PMID: 35955514 PMCID: PMC9369350 DOI: 10.3390/ijms23158381] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/23/2022] [Accepted: 07/23/2022] [Indexed: 02/04/2023] Open
Abstract
Chronic inflammation is implicated in numerous human pathologies. In particular, low-grade inflammation is currently recognized as an important mechanism of osteoarthritis (OA), at least in some patients. Among the signs of the inflammatory process are elevated macrophage numbers detected in the OA synovium compared to healthy controls. High macrophage counts also correlate with clinical symptoms of the disease. Macrophages are central players in the development of chronic inflammation, pain, cartilage destruction, and bone remodeling. However, macrophages are also involved in tissue repair and remodeling, including cartilage. Therefore, reduction of macrophage content in the joints correlates with deleterious effects in OA models. Macrophage population is heterogeneous and dynamic, with phenotype transitions being induced by a variety of stimuli. In order to effectively use the macrophage inflammatory circuit for treatment of OA, it is important to understand macrophage heterogeneity and interactions with surrounding cells and tissues in the joint. In this review, we discuss functional phenotypes of macrophages and specific targeting approaches relevant for OA treatment development.
Collapse
|
5
|
Previtali D, Capone G, Marchettini P, Candrian C, Zaffagnini S, Filardo G. High Prevalence of Pain Sensitization in Knee Osteoarthritis: A Meta-Analysis with Meta-Regression. Cartilage 2022; 13:19476035221087698. [PMID: 35356833 PMCID: PMC9137298 DOI: 10.1177/19476035221087698] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE The aim of this meta-analysis was to study the evidence on pain sensitization in knee osteoarthritis (OA), providing a quantitative synthesis of its prevalence and impact. Factors associated with pain sensitization were also investigated. METHODS Meta-analysis; PubMed (MEDLINE), Cochrane Central Register (CENTRAL), and Web of Science were searched on February 2021. Level I to level IV studies evaluating the presence of pain sensitization in patients with symptomatic knee OA, documented through a validated method (questionnaires or quantitative sensory testing), were included. The primary outcome was the prevalence of pain sensitization. Factors influencing the prevalence were also evaluated, as well as differences in terms of pain thresholds between knee OA patients and healthy controls. RESULTS Fifty-three articles including 7,117 patients were included. The meta-analysis of proportion documented a prevalence of pain sensitization of 20% (95% confidence interval [CI] = 16%-26%) with a significant heterogeneity of results (I2 = 89%, P < 0.001). The diagnostic tool used was the main factor influencing the documented prevalence of pain sensitization (P = 0.01). Knee OA patients presented higher pain sensitivity compared with healthy controls, both in terms of local pressure pain threshold (standardized mean difference [SMD] = -1.00, 95% CI = -1.67 to -0.32, P = 0.007) and distant pressure pain threshold (SMD = -0.54, 95% CI = -0.76 to -0.31, P < 0.001). CONCLUSIONS Knee OA pain presents features that are consistent with a significant degree of pain sensitization. There is a high heterogeneity in the reported results, mainly based on the diagnostic tool used. The identification of the best methods to detect pain sensitization is warranted to correctly evaluate and manage symptoms of patients affected by knee OA. REGISTRATION PROSPERO CRD42019123347.
Collapse
Affiliation(s)
- Davide Previtali
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland
| | - Gianluigi Capone
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland,Gianluigi Capone, Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Via Tesserete 46, 6900 Lugano, Switzerland.
| | - Paolo Marchettini
- Fisiopatologia e Terapia del Dolore, Dipartimento di Farmacologia, Careggi Università di Firenze, Florence, Italy,Terapia del Dolore, CDI Centro Diagnostico Italiano, Milan, Italy
| | - Christian Candrian
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland,Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
| | | | - Giuseppe Filardo
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland,Applied and Translational Research Center, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| |
Collapse
|
6
|
Patel M, Johnson AJ, Booker SQ, Bartley EJ, Palit S, Powell-Roach K, Terry EL, Fullwood D, DeMonte L, Mickle AM, Sibille KT. Applying the NIA Health Disparities Research Framework to Identify Needs and Opportunities in Chronic Musculoskeletal Pain Research. THE JOURNAL OF PAIN 2021; 23:25-44. [PMID: 34280570 DOI: 10.1016/j.jpain.2021.06.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 06/25/2021] [Accepted: 06/25/2021] [Indexed: 11/19/2022]
Abstract
Disparities in the experience of chronic musculoskeletal pain in the United States stem from a confluence of a broad array of factors. Organized within the National Institute on Aging Health Disparity Research Framework, a literature review was completed to evaluate what is known and what is needed to move chronic musculoskeletal pain research forward specific to disproportionately affected populations. Peer-reviewed studies published in English, on human adults, from 2000 to 2019, and conducted in the United States were extracted from PubMed and Web of Science. Articles were reviewed for key words that focused on underrepresented ethnic/race groups with chronic musculoskeletal pain applying health factor terms identified in the NIAHealth Disparity Research Framework four levels of analysis: 1) environmental, 2) sociocultural, 3) behavioral, and 4) biological. A total of 52 articles met inclusion criteria. There were limited publications specific to underrepresented ethnic/race groups with chronic musculoskeletal pain across all levels with particular research gaps under sociocultural and biological categories. Current limitations in evidence may be supplemented by a foundation of findings specific to the broader topic of "chronic pain" which provides guidance for future investigations. Study designs including a focus on protective factors and multiple levels of analyses would be particularly meritorious. PERSPECTIVE: Chronic musculoskeletal pain unequally burdens underrepresented ethnic/race groups. In order to move research forward and to systematically investigate the complex array of factors contributing toward health disparities, an organized approach is necessary. Applying the NIA Health Disparities Research Framework, an overview of the current state of evidence specific to chronic musculoskeletal pain and underrepresented ethnic/race groups is provided with future directions identified.
Collapse
Affiliation(s)
- Monika Patel
- Department of Anesthesiology, Division of Pain Medicine, University of Florida Health at Jacksonville, Jacksonville, Florida
| | - Alisa J Johnson
- Department of Community Dentistry and Behavioral Science, College of Dentistry, University of Florida, Gainesville, Florida; Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, Florida
| | - Staja Q Booker
- Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, Florida; College of Nursing, University of Florida, Gainesville, Florida
| | - Emily J Bartley
- Department of Community Dentistry and Behavioral Science, College of Dentistry, University of Florida, Gainesville, Florida; Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, Florida
| | - Shreela Palit
- Department of Community Dentistry and Behavioral Science, College of Dentistry, University of Florida, Gainesville, Florida; Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, Florida
| | - Keesha Powell-Roach
- Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, Florida; College of Nursing, University of Florida, Gainesville, Florida
| | - Ellen L Terry
- Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, Florida; College of Nursing, University of Florida, Gainesville, Florida
| | - Dottington Fullwood
- Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, Florida; Department of Aging and Geriatric Research, Institute on Aging, College of Medicine, University of Florida, Gainesville, Florida
| | - Lucas DeMonte
- Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, Florida
| | - Angela M Mickle
- Department of Community Dentistry and Behavioral Science, College of Dentistry, University of Florida, Gainesville, Florida; Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, Florida
| | - Kimberly T Sibille
- Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, Florida; Department of Aging and Geriatric Research, Institute on Aging, College of Medicine, University of Florida, Gainesville, Florida; Department of Anesthesiology, Division of Pain Medicine, College of Medicine, University of Florida, Gainesville, Florida.
| |
Collapse
|
7
|
Kumaradev S, Roux C, Sellam J, Perrot S, Pham T, Dugravot A, Molto A. Sociodemographic determinants in the evolution of pain in inflammatory rheumatic diseases: results from ESPOIR and DESIR cohorts. Rheumatology (Oxford) 2021; 61:1496-1509. [PMID: 34270700 PMCID: PMC8996788 DOI: 10.1093/rheumatology/keab562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/30/2021] [Indexed: 11/21/2022] Open
Abstract
Objective To determine whether socio-demographic factors are associated with heterogeneity in pain evolution in inflammatory rheumatic diseases (IRDs) after accounting for disease-specific characteristics in a system with universal health care. Methods This analysis included the data from two prospective observational cohorts of early IRDs (ESPOIR for early RA and DESIR for early SpA). Data on pain was measured, respectively, on 13 and 9 occasions spanning 10 and 6 years of follow-up using the Short-Form 36 bodily pain score for 810 participants of ESPOIR, and 679 participants of DESIR. Linear mixed models were used to characterize differences in pain evolution as a function of age (tertiles), sex, ethnicity, education, marital, and professional status, after accounting for disease-related, treatment, lifestyle, and health factors. Results While transitioning from early (disease duration ≤6 months for RA and ≤3 years for SpA) to long-standing disease, differences in pain evolution emerged as a function of age (P < 0.001), sex (P = 0.050), and ethnicity (P = 0.001) in RA, and as a function of age (P = 0.048) in SpA; younger age, males, and Caucasians exhibited lower pain in the latter phases of both diseases. Highly educated participants (RA, β = −3.8, P = 0.007; SpA, β = −6.0, P < 0.001) for both diseases, and Caucasians (β = −5.6, P = 0.021) for SpA presented with low pain early in the disease, with no changes throughout disease course. Conclusion Being older, female, non-Caucasian and having lower education was found to be associated with worse pain in early and/or long-standing IRDs, despite universally accessible health-care. Early identification of at-risk populations and implementation of multidisciplinary strategies may reduce patient-reported health outcome disparities. Trial registration registrations ESPOIR: ClinicalTrials.gov, www.clinicaltrials.gov, NCT03666091. DESIR: ClinicalTrials.gov, www.clinicaltrials.gov, NCT01648907.
Collapse
Affiliation(s)
- Sushmithadev Kumaradev
- Clinical epidemiology applied to rheumatic and musculoskeletal diseases, Inserm 1153, Université de Paris, Paris, France.,Epidemiology of Ageing and Neurodegenerative diseases, Inserm 1153, Université de Paris, Paris, France
| | - Christian Roux
- Clinical epidemiology applied to rheumatic and musculoskeletal diseases, Inserm 1153, Université de Paris, Paris, France.,Department of Rheumatology, APHP-Centre, Cochin Hospital, Paris, France
| | - Jérémie Sellam
- Department of Rheumatology, APHP-Centre, Saint-Antoine Hospital, Paris, France
| | - Serge Perrot
- Pain clinic, APHP-Centre, INSERM U897, Cochin Hospital, Paris, France
| | - Thao Pham
- Department of Rheumatology, APHM, Sainte-Marguerite Hospital, Aix-Marseille Univ, Marseille, France
| | - Aline Dugravot
- Epidemiology of Ageing and Neurodegenerative diseases, Inserm 1153, Université de Paris, Paris, France
| | - Anna Molto
- Clinical epidemiology applied to rheumatic and musculoskeletal diseases, Inserm 1153, Université de Paris, Paris, France.,Department of Rheumatology, APHP-Centre, Cochin Hospital, Paris, France
| |
Collapse
|
8
|
Fu K, Metcalf B, Bennell KL, Zhang Y, Deveza LA, Robbins SR, Hunter DJ. The association between psychological factors and pain exacerbations in hip osteoarthritis. Rheumatology (Oxford) 2021; 60:1291-1299. [PMID: 32940708 DOI: 10.1093/rheumatology/keaa494] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 07/06/2020] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES To evaluate the association between psychological factors and pain exacerbations in people with hip OA. METHODS Eligible participants with symptomatic hip OA were instructed to complete online questionnaires every 10 days over a 90-day follow-up period. In addition, they were required to complete the questionnaire whenever they perceived they were experiencing a hip pain exacerbation. Hip pain exacerbation was defined as an increase of 2 points in pain intensity compared with baseline on an 11-point numeric rating scale (0-10). The Depression, Anxiety and Stress Scale-21 Items, Positive and Negative Affect Schedule, Pain Catastrophizing Scale and Pain Self-Efficacy Questionnaire were used to evaluate psychological factors. The associations of these with risk of hip pain exacerbation were examined by conditional logistic regression. RESULTS Of 252 participants recruited, 131 (52.0%) contributed both case and control period data and were included in the analysis. A significant association was found between Pain Catastrophizing Scale overall score (1 point increase) with hip pain exacerbations (odds ratio: 1.07, 95% CI: 1.04, 1.11). An increase of a minimal important change (5.5 points) of Pain Self-Efficacy Questionnaire score was associated with a lower odds of pain exacerbations (odds ratio: 0.74, 95% CI: 0.65, 0.85). No significant associations were found between Depression, Anxiety and Stress Scale-21 Items or Positive and Negative Affect Schedule scores with hip pain exacerbations. CONCLUSION Both pain catastrophizing and pain self-efficacy beliefs were associated with pain exacerbations in people with hip OA, but other psychological factors including depression, anxiety and stress or positive and negative affects, were not associated with pain exacerbations.
Collapse
Affiliation(s)
- Kai Fu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Institute of Bone and Joint Research, Kolling Institute, The University of Sydney, NSW, Australia.,Department of Rheumatology, Royal North Shore Hospital and Northern Clinical School, The University of Sydney, NSW, Australia
| | - Ben Metcalf
- Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, University of Melbourne, Parkville, VIC, Australia
| | - Kim L Bennell
- Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, University of Melbourne, Parkville, VIC, Australia
| | - Yuqing Zhang
- Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Harvard School of Medicine, Boston, MA, USA
| | - Leticia A Deveza
- Institute of Bone and Joint Research, Kolling Institute, The University of Sydney, NSW, Australia.,Department of Rheumatology, Royal North Shore Hospital and Northern Clinical School, The University of Sydney, NSW, Australia
| | - Sarah R Robbins
- Institute of Bone and Joint Research, Kolling Institute, The University of Sydney, NSW, Australia.,Department of Rheumatology, Royal North Shore Hospital and Northern Clinical School, The University of Sydney, NSW, Australia
| | - David J Hunter
- Institute of Bone and Joint Research, Kolling Institute, The University of Sydney, NSW, Australia.,Department of Rheumatology, Royal North Shore Hospital and Northern Clinical School, The University of Sydney, NSW, Australia
| |
Collapse
|
9
|
Pierson E, Cutler DM, Leskovec J, Mullainathan S, Obermeyer Z. An algorithmic approach to reducing unexplained pain disparities in underserved populations. Nat Med 2021; 27:136-140. [PMID: 33442014 DOI: 10.1038/s41591-020-01192-7] [Citation(s) in RCA: 106] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 11/24/2020] [Indexed: 02/06/2023]
Abstract
Underserved populations experience higher levels of pain. These disparities persist even after controlling for the objective severity of diseases like osteoarthritis, as graded by human physicians using medical images, raising the possibility that underserved patients' pain stems from factors external to the knee, such as stress. Here we use a deep learning approach to measure the severity of osteoarthritis, by using knee X-rays to predict patients' experienced pain. We show that this approach dramatically reduces unexplained racial disparities in pain. Relative to standard measures of severity graded by radiologists, which accounted for only 9% (95% confidence interval (CI), 3-16%) of racial disparities in pain, algorithmic predictions accounted for 43% of disparities, or 4.7× more (95% CI, 3.2-11.8×), with similar results for lower-income and less-educated patients. This suggests that much of underserved patients' pain stems from factors within the knee not reflected in standard radiographic measures of severity. We show that the algorithm's ability to reduce unexplained disparities is rooted in the racial and socioeconomic diversity of the training set. Because algorithmic severity measures better capture underserved patients' pain, and severity measures influence treatment decisions, algorithmic predictions could potentially redress disparities in access to treatments like arthroplasty.
Collapse
Affiliation(s)
- Emma Pierson
- Department of Computer Science, Stanford University, Stanford, CA, USA.,Microsoft Research, Cambridge, MA, USA
| | - David M Cutler
- Department of Economics, Harvard University, Cambridge, MA, USA
| | - Jure Leskovec
- Department of Computer Science, Stanford University, Stanford, CA, USA
| | | | - Ziad Obermeyer
- School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| |
Collapse
|
10
|
Marco CA, Murray BP, McMurray M, Nelson B, Feery D, Bayonnet B, Butman J, Bashir S. The verbal numeric pain scale: Emergency Department patients' understanding and perspectives. Am J Emerg Med 2020; 45:520-522. [PMID: 33077314 DOI: 10.1016/j.ajem.2020.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 06/29/2020] [Accepted: 07/01/2020] [Indexed: 10/23/2022] Open
Affiliation(s)
- Catherine A Marco
- Department of Emergency Medicine, Wright State University Boonshoft School of Medicine, Dayton, OH, United States of America.
| | - Brian Patrick Murray
- Department of Emergency Medicine, Wright State University Boonshoft School of Medicine, Dayton, OH, United States of America
| | - Mitchell McMurray
- Wright State University Boonshoft School of Medicine, Dayton, OH, United States of America
| | - Blake Nelson
- Wright State University Boonshoft School of Medicine, Dayton, OH, United States of America
| | - Declan Feery
- Wright State University Boonshoft School of Medicine, Dayton, OH, United States of America
| | - Bricey Bayonnet
- Wright State University Boonshoft School of Medicine, Dayton, OH, United States of America
| | - Jacob Butman
- Wright State University Boonshoft School of Medicine, Dayton, OH, United States of America
| | - Sabina Bashir
- Wright State University Boonshoft School of Medicine, Dayton, OH, United States of America
| |
Collapse
|
11
|
Davis AM, Davis KD, Skou ST, Roos EM. Why Is Exercise Effective in Reducing Pain in People with Osteoarthritis? CURRENT TREATMENT OPTIONS IN RHEUMATOLOGY 2020. [DOI: 10.1007/s40674-020-00154-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
12
|
Conaghan PG, Cook AD, Hamilton JA, Tak PP. Therapeutic options for targeting inflammatory osteoarthritis pain. Nat Rev Rheumatol 2020; 15:355-363. [PMID: 31068673 DOI: 10.1038/s41584-019-0221-y] [Citation(s) in RCA: 194] [Impact Index Per Article: 48.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Pain is the major symptom of osteoarthritis (OA) and is an important factor in strategies to manage this disease. However, the current standard of care does not provide satisfactory pain relief for many patients. The pathophysiology of OA is complex, and its presentation as a clinical syndrome is associated with pathologies of multiple joint tissues. Inflammation is associated with both OA pain and disease outcome and is therefore a major treatment target for OA and OA pain. Unlike TNF inhibitors and IL-1 inhibitors, established drugs such as glucocorticoids and methotrexate can reduce OA pain. Although central nociceptive pathways contribute to OA pain, crosstalk between the immune system and nociceptive neurons is central to inflammatory pain; therefore, new therapies might target this crosstalk. Newly identified drug targets, including neurotrophins and the granulocyte-macrophage colony-stimulating factor (GM-CSF)-CC-chemokine ligand 17 (CCL17) chemokine axis, offer the hope of better results but require clinical validation.
Collapse
Affiliation(s)
- Philip G Conaghan
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and National Institute of Health Research Leeds Biomedical Research Centre, Leeds, UK
| | - Andrew D Cook
- The University of Melbourne, Department of Medicine, Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - John A Hamilton
- The University of Melbourne, Department of Medicine, Royal Melbourne Hospital, Parkville, Victoria, Australia.,Australian Institute for Musculoskeletal Science (AIMSS), The University of Melbourne and Western Health, St Albans, Victoria, Australia
| | - Paul P Tak
- Department of Clinical Immunology & Rheumatology, Academic Medical Centre, Amsterdam University Medical Centre, Amsterdam, Netherlands. .,Department of Rheumatology, Ghent University, Ghent, Belgium. .,Department of Medicine, Cambridge University, Cambridge, UK. .,Flagship Pioneering, Cambridge, MA, USA.
| |
Collapse
|
13
|
Kolasinski SL, Neogi T, Hochberg MC, Oatis C, Guyatt G, Block J, Callahan L, Copenhaver C, Dodge C, Felson D, Gellar K, Harvey WF, Hawker G, Herzig E, Kwoh CK, Nelson AE, Samuels J, Scanzello C, White D, Wise B, Altman RD, DiRenzo D, Fontanarosa J, Giradi G, Ishimori M, Misra D, Shah AA, Shmagel AK, Thoma LM, Turgunbaev M, Turner AS, Reston J. 2019 American College of Rheumatology/Arthritis Foundation Guideline for the Management of Osteoarthritis of the Hand, Hip, and Knee. Arthritis Care Res (Hoboken) 2020; 72:149-162. [PMID: 31908149 DOI: 10.1002/acr.24131] [Citation(s) in RCA: 623] [Impact Index Per Article: 155.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/11/2019] [Indexed: 01/30/2023]
Abstract
OBJECTIVE To develop an evidence-based guideline for the comprehensive management of osteoarthritis (OA) as a collaboration between the American College of Rheumatology (ACR) and the Arthritis Foundation, updating the 2012 ACR recommendations for the management of hand, hip, and knee OA. METHODS We identified clinically relevant population, intervention, comparator, outcomes questions and critical outcomes in OA. A Literature Review Team performed a systematic literature review to summarize evidence supporting the benefits and harms of available educational, behavioral, psychosocial, physical, mind-body, and pharmacologic therapies for OA. Grading of Recommendations Assessment, Development and Evaluation methodology was used to rate the quality of the evidence. A Voting Panel, including rheumatologists, an internist, physical and occupational therapists, and patients, achieved consensus on the recommendations. RESULTS Based on the available evidence, either strong or conditional recommendations were made for or against the approaches evaluated. Strong recommendations were made for exercise, weight loss in patients with knee and/or hip OA who are overweight or obese, self-efficacy and self-management programs, tai chi, cane use, hand orthoses for first carpometacarpal (CMC) joint OA, tibiofemoral bracing for tibiofemoral knee OA, topical nonsteroidal antiinflammatory drugs (NSAIDs) for knee OA, oral NSAIDs, and intraarticular glucocorticoid injections for knee OA. Conditional recommendations were made for balance exercises, yoga, cognitive behavioral therapy, kinesiotaping for first CMC OA, orthoses for hand joints other than the first CMC joint, patellofemoral bracing for patellofemoral knee OA, acupuncture, thermal modalities, radiofrequency ablation for knee OA, topical NSAIDs, intraarticular steroid injections and chondroitin sulfate for hand OA, topical capsaicin for knee OA, acetaminophen, duloxetine, and tramadol. CONCLUSION This guideline provides direction for clinicians and patients making treatment decisions for the management of OA. Clinicians and patients should engage in shared decision-making that accounts for patients' values, preferences, and comorbidities. These recommendations should not be used to limit or deny access to therapies.
Collapse
Affiliation(s)
| | - Tuhina Neogi
- Boston University School of Medicine, Boston, Massachusetts
| | - Marc C Hochberg
- University of Maryland School of Medicine and Veterans Affairs Maryland Health Care System, Baltimore
| | | | | | - Joel Block
- Rush University Medical Center, Chicago, Illinois
| | - Leigh Callahan
- University of North Carolina School of Medicine, Chapel Hill
| | - Cindy Copenhaver
- South Holland Recreational Services, University of Chicago, and Ingalls Memorial Hospital, Thornton, Illinois
| | - Carole Dodge
- University of Michigan Medical Center, Ann Arbor
| | - David Felson
- Boston University School of Medicine, Boston, Massachusetts
| | | | | | | | | | - C Kent Kwoh
- University of Arizona College of Medicine, Tucson
| | - Amanda E Nelson
- University of North Carolina School of Medicine, Chapel Hill
| | | | | | | | | | - Roy D Altman
- Ronald Reagan UCLA Medical Center, Los Angeles, California
| | - Dana DiRenzo
- Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | - Gina Giradi
- ECRI Institute, Plymouth Meeting, Pennsylvania
| | | | - Devyani Misra
- Boston University School of Medicine, Boston, Massachusetts
| | | | | | - Louise M Thoma
- University of North Carolina School of Medicine, Chapel Hill
| | | | - Amy S Turner
- American College of Rheumatology, Atlanta, Georgia
| | | |
Collapse
|
14
|
Kolasinski SL, Neogi T, Hochberg MC, Oatis C, Guyatt G, Block J, Callahan L, Copenhaver C, Dodge C, Felson D, Gellar K, Harvey WF, Hawker G, Herzig E, Kwoh CK, Nelson AE, Samuels J, Scanzello C, White D, Wise B, Altman RD, DiRenzo D, Fontanarosa J, Giradi G, Ishimori M, Misra D, Shah AA, Shmagel AK, Thoma LM, Turgunbaev M, Turner AS, Reston J. 2019 American College of Rheumatology/Arthritis Foundation Guideline for the Management of Osteoarthritis of the Hand, Hip, and Knee. Arthritis Rheumatol 2020; 72:220-233. [PMID: 31908163 PMCID: PMC10518852 DOI: 10.1002/art.41142] [Citation(s) in RCA: 732] [Impact Index Per Article: 183.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/11/2019] [Indexed: 01/06/2023]
Abstract
OBJECTIVE To develop an evidence-based guideline for the comprehensive management of osteoarthritis (OA) as a collaboration between the American College of Rheumatology (ACR) and the Arthritis Foundation, updating the 2012 ACR recommendations for the management of hand, hip, and knee OA. METHODS We identified clinically relevant population, intervention, comparator, outcomes questions and critical outcomes in OA. A Literature Review Team performed a systematic literature review to summarize evidence supporting the benefits and harms of available educational, behavioral, psychosocial, physical, mind-body, and pharmacologic therapies for OA. Grading of Recommendations Assessment, Development and Evaluation methodology was used to rate the quality of the evidence. A Voting Panel, including rheumatologists, an internist, physical and occupational therapists, and patients, achieved consensus on the recommendations. RESULTS Based on the available evidence, either strong or conditional recommendations were made for or against the approaches evaluated. Strong recommendations were made for exercise, weight loss in patients with knee and/or hip OA who are overweight or obese, self-efficacy and self-management programs, tai chi, cane use, hand orthoses for first carpometacarpal (CMC) joint OA, tibiofemoral bracing for tibiofemoral knee OA, topical nonsteroidal antiinflammatory drugs (NSAIDs) for knee OA, oral NSAIDs, and intraarticular glucocorticoid injections for knee OA. Conditional recommendations were made for balance exercises, yoga, cognitive behavioral therapy, kinesiotaping for first CMC OA, orthoses for hand joints other than the first CMC joint, patellofemoral bracing for patellofemoral knee OA, acupuncture, thermal modalities, radiofrequency ablation for knee OA, topical NSAIDs, intraarticular steroid injections and chondroitin sulfate for hand OA, topical capsaicin for knee OA, acetaminophen, duloxetine, and tramadol. CONCLUSION This guideline provides direction for clinicians and patients making treatment decisions for the management of OA. Clinicians and patients should engage in shared decision-making that accounts for patients' values, preferences, and comorbidities. These recommendations should not be used to limit or deny access to therapies.
Collapse
Affiliation(s)
| | - Tuhina Neogi
- Boston University School of Medicine, Boston, Massachusetts
| | - Marc C. Hochberg
- University of Maryland School of Medicine and Veterans Affairs Maryland Health Care System, Baltimore
| | | | | | - Joel Block
- Rush University Medical Center, Chicago, Illinois
| | - Leigh Callahan
- University of North Carolina School of Medicine, Chapel Hill
| | - Cindy Copenhaver
- South Holland Recreational Services, University of Chicago, and Ingalls Memorial Hospital, Thornton, Illinois
| | - Carole Dodge
- University of Michigan Medical Center, Ann Arbor
| | - David Felson
- Boston University School of Medicine, Boston, Massachusetts
| | | | | | | | | | - C. Kent Kwoh
- University of Arizona College of Medicine, Tucson
| | | | | | | | | | | | - Roy D. Altman
- Ronald Reagan UCLA Medical Center, Los Angeles, California
| | - Dana DiRenzo
- Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | - Gina Giradi
- ECRI Institute, Plymouth Meeting, Pennsylvania
| | | | - Devyani Misra
- Boston University School of Medicine, Boston, Massachusetts
| | | | | | - Louise M. Thoma
- University of North Carolina School of Medicine, Chapel Hill
| | | | | | | |
Collapse
|
15
|
Family Strain, Depression, and Somatic Amplification in Adults with Chronic Pain. Int J Behav Med 2019; 26:427-436. [DOI: 10.1007/s12529-019-09799-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
16
|
Agarwalla A, Gowd AK, Liu JN, Lalehzarian SP, Christian DR, Cole BJ, Forsythe B, Verma NN. Predictive Factors and Duration to Return to Sport After Isolated Meniscectomy. Orthop J Sports Med 2019; 7:2325967119837940. [PMID: 31041328 PMCID: PMC6484247 DOI: 10.1177/2325967119837940] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Background: Return to sport (RTS) after meniscectomy is an important metric for young, active patients. However, the impact of the duration from surgery to RTS on clinical outcomes is not fully understood and is not reflected in outcome scores. Purpose: To establish when patients RTS after meniscectomy and to determine predictive measures for the ability to return to their preinjury activity. Study Design: Case-control study; Level of evidence, 3. Methods: All patients undergoing meniscectomy between 2016 and 2017 from a single institution were assessed for inclusion. RTS, type of activity, and level of function upon returning were obtained. The minimal clinically important difference (MCID), substantial clinical benefit, and patient acceptable symptom state (PASS) were calculated for the Knee injury and Osteoarthritis Outcome Score (KOOS) and International Knee Documentation Committee (IKDC) questionnaire using anchor-based and distribution-based approaches. Preoperative knee-specific and generic quality-of-life scores were analyzed to determine their predictive power of RTS. A multivariate logistical analysis was also performed to determine which demographic variables corresponded to RTS. Results: Overall, 94 patients (mean age, 51.0 ± 11.1 years) who underwent meniscectomy participated in sports within 6 months of surgery. Of these patients, 76.6% returned to sport without permanent restrictions at a mean of 8.6 ± 6.9 weeks postoperatively. RTS rates for low-, medium-, and high-intensity activities were 75.0%, 70.0%, and 82.5%, respectively. RTS was associated with achieving the PASS for the KOOS–Physical Function short form (PS), KOOS-Pain, and KOOS-Sports (P = .004, P = .007, and P = .006, respectively) but not for the IKDC questionnaire (P = .3). Achieving the MCID was associated with RTS for the KOOS-Sports, KOOS-Pain, and IKDC questionnaire (P < .001, P = .03, and P = .001, respectively). There was no preoperative or intraoperative variable that was predictive of RTS. Preoperative KOOS-PS scores ≥37.8 (area under the curve = 76.3%) and KOOS-Pain scores ≥51.4 (area under the curve = 72.5%) were predictive of RTS. Conclusion: Approximately 77% of patients returned to sport after meniscectomy at a mean of 2 months postoperatively. The level of activity intensity did not significantly alter the rate of RTS. Higher preoperative scores on the KOOS-PS and KOOS-Pain were predictive of RTS. Identifying these factors allows physicians to counsel patients on expected outcomes after meniscectomy.
Collapse
Affiliation(s)
- Avinesh Agarwalla
- Department of Orthopaedic Surgery, Westchester Medical Center, Valhalla, New York, USA
| | - Anirudh K Gowd
- Department of Orthopaedic Surgery, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Joseph N Liu
- Department of Orthopaedic Surgery, Loma Linda University Medical Center, Loma Linda, California, USA
| | - Simon P Lalehzarian
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA
| | - David R Christian
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois, USA
| | - Brian J Cole
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA
| | - Brian Forsythe
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA
| | - Nikhil N Verma
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA
| |
Collapse
|
17
|
Lin CY, Loyola-Sanchez A, Hurd K, Ferucci ED, Crane L, Healy B, Barnabe C. Characterization of indigenous community engagement in arthritis studies conducted in Canada, United States of America, Australia and New Zealand. Semin Arthritis Rheum 2019; 49:145-155. [PMID: 30598333 DOI: 10.1016/j.semarthrit.2018.11.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 10/21/2018] [Accepted: 11/20/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND Research adhering to community engagement processes leads to improved outcomes. The level of Indigenous communities' engagement in rheumatology research is unknown. OBJECTIVE To characterize the frequency and level of community engagement reporting in arthritis studies conducted in Australia (AUS), Canada (CAN), New Zealand (NZ) and the United States of America (USA). METHODS Studies identified through systematic reviews on topics of arthritis epidemiology, disease phenotypes and outcomes, health service utilization and mortality in Indigenous populations of AUS, CAN, NZ and USA, were evaluated for their descriptions of community engagement. The level of community engagement during inception, data collection and results interpretation/dissemination stages of research was evaluated using a custom-made instrument, which ranked studies along the community engagement spectrum (i.e. inform-consult-involve-collaborate-empower). Meaningful community engagement was defined as involving, collaborating or empowering communities. Descriptive analyses for community engagement were performed and secondary non-parametric inferential analyses were conducted to evaluate the possible associations between year of publication, origin of the research idea, publication type and region of study; and meaningful community engagement. RESULTS Only 34% (n = 69) of the 205 studies identified reported community engagement at ≥ 1 stage of research. Nearly all studies that engaged communities (99% (n = 68)) did so during data collection, while only 10% (n = 7) did so at the inception of research and 16% (n = 11) described community engagement at the results' interpretation/dissemination stage. Most studies provided community engagement descriptions that were assessed to be at the lower end of the spectrum. At the inception of research stage, 3 studies reported consulting communities, while 42 studies reported community consultation at data collection stage and 4 studies reported informing or consulting communities at the interpretation/dissemination of results stage. Only 4 studies described meaningful community engagement through all stages of the research. Inferential statistics identified that studies with research ideas that originated from the Indigenous communities involved were significantly more associated with achieving meaningful community engagement. CONCLUSIONS The reporting of Indigenous community engagement in published arthritis studies is limited in frequency and is most frequently described at the lower end of the community engagement spectrum. Processes that support meaningful community engagement are to be promoted.
Collapse
Affiliation(s)
- Chu Yang Lin
- Faculty of Medicine & Dentistry, University of Alberta, Canada.
| | | | - Kelle Hurd
- Cumming School of Medicine, University of Calgary, Canada.
| | | | | | - Bonnie Healy
- Alberta First Nations Information Governance Center, Canada.
| | - Cheryl Barnabe
- Departments of Medicine and Community Health Sciences, University of Calgary and Rheumatologist, Alberta Health Services, 3330 Hospital Drive NW, T2N 4N1, Calgary, Alberta, Canada.
| |
Collapse
|
18
|
Vaughn IA, Terry EL, Bartley EJ, Schaefer N, Fillingim RB. Racial-Ethnic Differences in Osteoarthritis Pain and Disability: A Meta-Analysis. THE JOURNAL OF PAIN 2018; 20:629-644. [PMID: 30543951 DOI: 10.1016/j.jpain.2018.11.012] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 11/19/2018] [Accepted: 11/27/2018] [Indexed: 01/12/2023]
Abstract
Osteoarthritis (OA), a leading cause of disability and pain, affects 32.5 million Americans, producing tremendous economic burden. Although some findings suggest that racial/ethnic minorities experience increased OA pain severity, other studies have shown conflicting results. This meta-analysis examined differences in clinical pain severity between African Americans (AAs) and non-Hispanic whites with OA. Articles were initially identified between October 1 and 5, 2016, and updated May 30, 2018, using PubMed, Web of Science, PsycINFO, and the Cochrane Library Database. Eligibility included English-language peer-reviewed articles comparing clinical pain severity in adult black/AA and non-Hispanic white/Caucasian patients with OA. Nonduplicate article abstracts (N = 1,194) were screened by 4 reviewers, 224 articles underwent full-text review, and 61 articles reported effect sizes of pain severity stratified by race. Forest plots of the standard mean difference showed higher pain severity in AAs for studies using the Western Ontario and McMasters Universities Osteoarthritis Index (0.57; 95% confidence interval [CI], 0.54-0.61) and non-Western Ontario and McMasters Universities Osteoarthritis Index studies (0.35, 95% CI, 0.23-0.47). AAs also showed higher self-reported disability (0.38, 95% CI, 0.22-0.54) and poorer performance testing (-0.58, 95% CI, -0.72 to -0.44). Clinical pain severity and disability in OA is higher among AAs and future studies should explore the reasons for these differences to improve pain management. PERSPECTIVE: This meta-analysis shows that differences exist in clinical pain severity, functional limitations, and poor performance between AAs and non-Hispanic whites with OA. This research may lead to a better understanding of racial/ethnic differences in OA-related pain.
Collapse
Affiliation(s)
- Ivana A Vaughn
- Department of Health Services Research, Management & Policy, College of Public Health and Health Professions, University of Florida, Gainesville, Florida; Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, Florida.
| | - Ellen L Terry
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, Florida
| | - Emily J Bartley
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, Florida
| | - Nancy Schaefer
- Health Science Center Libraries, University of Florida, Gainesville, Florida
| | - Roger B Fillingim
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, Florida
| |
Collapse
|
19
|
Apkarian AV, Reckziegel D. Peripheral and central viewpoints of chronic pain, and translational implications. Neurosci Lett 2018; 702:3-5. [PMID: 30503914 DOI: 10.1016/j.neulet.2018.11.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This overview covers advances in mechanisms of chronic pain and their consequent clinical opportunities. Our research field is fractured into two separate camps: "peripheralists" and "centralists". While the strong position of the first group is the contention that mechanisms of chronic pain can be understood within the limits of afferent inputs and spinal cord circuitry, the second group insists that the rest of the brain plays a critical role. Here we attempt to conjoin these positions, across clinical pain conditions and animal studies, and demonstrate that the effort can lead to novel translational concepts.
Collapse
Affiliation(s)
- A Vania Apkarian
- Department of Physiology, Northwestern University Feinberg School of Medicine, 303 East Chicago Avenue, Chicago, IL, 60611, USA; Department of Anesthesia, Northwestern University Feinberg School of Medicine, 303 East Chicago Avenue, Chicago, IL, 60611, USA; Department of Physical Medicine and Rehabilitation, Northwestern University Feinberg School of Medicine, 303 East Chicago Avenue, Chicago, IL, 60611, USA.
| | - Diane Reckziegel
- Department of Physiology, Northwestern University Feinberg School of Medicine, 303 East Chicago Avenue, Chicago, IL, 60611, USA
| |
Collapse
|