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Jansen NEJ, Schiphof D, Runhaar J, Oei EHG, Bierma-Zeinstra SMA, Middelkoop MV. Planned or recent first consultation with the general practitioner for knee complaints: Is it indicative of early-stage knee osteoarthritis? OSTEOARTHRITIS AND CARTILAGE OPEN 2024; 6:100493. [PMID: 38966077 PMCID: PMC11223112 DOI: 10.1016/j.ocarto.2024.100493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 06/03/2024] [Indexed: 07/06/2024] Open
Abstract
Objective No established definition for early-stage knee osteoarthritis (KOA) is available, nor classification criteria. Identifying the characteristics of individuals presenting with early-stage KOA symptoms can enhance diagnosis to prevent progression. This study aimed to describe clinical and structural features of individuals presenting with knee complaints within two years after their first consultation, while exploring differences in the duration of knee complaints. Method Baseline data was used from the LITE randomized controlled trial, assessing the effectiveness of a lifestyle intervention for individuals with knee complaints and overweight in primary care. Baseline assessments included questionnaires, clinical assessment, and MRI of the most symptomatic knee. Differences between groups with varying durations of knee complaints (<12, ≥12-<24, ≥24 months) were evaluated. Results Participants (N = 218, 65% female, mean age 59 ± 6 years, mean BMI 32 ± 5 kg/m2) had a median knee complaint duration of 14 months, with an average KOOS pain score of 60 ± 17.46% reported their symptoms as unacceptable. Structural MRI-defined KOA was observed in 71% of participants. There were no significant differences in clinical or structural MRI features between different durations of knee complaints. Conclusion Within 24 months of initial consultation, over two-thirds of participants displayed MRI-defined structural KOA, and nearly half reported unacceptable symptom states. This study found no association between the duration of knee complaints and symptoms severity or structural KOA presence, underscoring the complexity of identifying stages of KOA among individuals with overweight. Future studies should explore additional features beyond current considerations to facilitate early-stage KOA diagnosis, specifically for individuals with overweight.
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Affiliation(s)
- Nuria EJ. Jansen
- Department of General Practice, Erasmus MC University Medical Center Rotterdam, the Netherlands
| | - Dieuwke Schiphof
- Department of General Practice, Erasmus MC University Medical Center Rotterdam, the Netherlands
| | - Jos Runhaar
- Department of General Practice, Erasmus MC University Medical Center Rotterdam, the Netherlands
| | - Edwin HG. Oei
- Department of Radiology & Nuclear Medicine, Erasmus MC University Medical Center Rotterdam, the Netherlands
| | | | - Marienke van Middelkoop
- Department of General Practice, Erasmus MC University Medical Center Rotterdam, the Netherlands
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2
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Yan Y, Lin L, Cheng K, Deng H, Qin M, Shen X, Zhao L. Therapeutic analysis of laser moxibustion for different KL graded knee osteoarthritis. Medicine (Baltimore) 2024; 103:e38567. [PMID: 38905409 PMCID: PMC11191897 DOI: 10.1097/md.0000000000038567] [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: 03/03/2024] [Accepted: 05/23/2024] [Indexed: 06/23/2024] Open
Abstract
BACKGROUND Our previous studies showed that laser moxibustion may be effective in alleviating the symptoms of knee osteoarthritis. However, the therapeutic effect in patients with different Kellgren-Lawrence (KL) grades is still unclear. We aimed to compare the efficacy of laser moxibustion in the treatment of knee osteoarthritis with different KL grades. METHODS A total of 392 symptomatic KOA patients with different KL grades were randomly assigned to the laser treatment or sham laser control group (1:1). The patients received laser moxibustion treatment or sham treatment 3 times a week for 4 weeks. Outcomes were measured using the Western Ontario and McMaster Universities Arthritis Index (WOMAC) scores and Visual Analog Scale (VAS) scores, and the primary outcome measurement was the change in WOMAC pain scores from baseline to week 4. RESULTS Among 392 randomized participants, 364 (92.86%) completed the trial. Participants with KL grades 2, 3, and 4 had significantly higher pain, functional, and total WOMAC scores than those with KL grade 1. Spearman correlation test results showed a positive correlation between KL grade and WOMAC pain, function, stiffness scores, and WOMAC total scores. That is, the higher the KL grade, the higher the WOMAC pain, function, stiffness, and WOMAC total scores. After 4 weeks of treatment, patients with KL grades 2 and 3 had significantly higher improvement scores in pain, function, and total scores than those with KL grade 1, whereas those with KL grade 2 had significantly higher improvement scores in stiffness than those with KL grade 1. Patients with KL grade 4 showed no significant effects after laser moxibustion treatment. CONCLUSION Laser moxibustion is effective for pain reduction and functional improvement in the treatment of KOA with KL grades 2 and 3.
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Affiliation(s)
- Yuming Yan
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lin Lin
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ke Cheng
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- School of Shanghai Research Center of Acupuncture and Meridian, Shanghai, China
| | - Haiping Deng
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Meng Qin
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xueyong Shen
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- School of Shanghai Research Center of Acupuncture and Meridian, Shanghai, China
| | - Ling Zhao
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Langworthy M, Lascarides P, Ngai W, Steele K, Huang Y. Three once-weekly intra-articular injections of Hylan G-F 20 significantly improve pain relief compared with placebo in patients with chronic idiopathic knee osteoarthritis: a single-centre, evaluator-blinded and patient-blinded, randomized controlled trial. Drugs Context 2024; 13:2023-11-3. [PMID: 38601838 PMCID: PMC11006243 DOI: 10.7573/dic.2023-11-3] [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: 11/09/2023] [Accepted: 03/06/2024] [Indexed: 04/12/2024] Open
Abstract
Background Clinical trials on the use of viscosupplementation with hyaluronic acid (HA) in patients with knee osteoarthritis (KOA) are inconsistent, making it challenging to determine its value in clinical practice. One issue is the availability of various HA products on the market; differences in their chemical features can impact patient outcomes. Herein, we assess the efficacy and safety of three once-weekly intra-articular (IA) injections of Hylan G-F 20, a high-molecular-weight and highly crosslinked HA product, in patients with KOA. We hypothesized that Hylan G-F 20 would provide significant pain relief with no increased safety risk compared with IA saline (placebo). Methods This was a 26-week, patient-blinded and evaluator-blinded, single-centre, randomized placebo- controlled trial. Men or women ≥18 years of age with Larsen grade II or III KOA were included. Patients received IA injections of either Hylan G-F 20 or placebo once a week for 3 weeks. The primary endpoints were the week 12 and 26 visits. Primary efficacy outcomes included visual analogue scale (VAS) pain scores, patient activity level and an overall assessment of clinical condition. Secondary outcomes included adverse events (AEs) that emerged during treatment. The primary analysis included the intention-to-treat population. An alpha level of 0.05 was used in the statistical analysis. Results Thirty patients were included in the intention-to-treat population (15 per group). All efficacy outcomes were statistically significant in favour of Hylan G-F 20, except night pain and inactivity stiffness, for both patient- assessed (all p=0.0001 at week 12) and evaluator-assessed (all p=0.0001 at week 12 and p=0.0004-0.0180 at week 26) measurements. There was also a greater proportion of symptom-free patients and those with a >50% improvement in their VAS scores, except night pain, in the Hylan G-F 20 group (p=0.001-0.003 in patient-assessed scores and p<0.0001 to 0.002 in evaluator-assessed scores at week 12). Two patients, one in each group, experienced an AE; no sequelae occurred, and no special treatment was required for either AE. No patients withdrew from the study prematurely due to an AE. Conclusion In patients with chronic idiopathic KOA, Hylan G-F 20 provides significant improvements in pain relief compared with placebo with no added safety concerns.
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Affiliation(s)
| | - Peter Lascarides
- Northwell Health, Northern Westchester Hospital, Mt Kisco, NY, USA
| | | | | | - Yili Huang
- Zucker School of Medicine at Hofstra/Northwell, Northwell Phelps Hospital, Sleepy Hollow, NY, USA
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Ishimoto R, Mutsuzaki H, Shimizu Y, Yoshikawa K, Koseki K, Takeuchi R, Matsumoto S, Hada Y. Association between Obesity and Short-Term Patient-Reported Outcomes following Total Knee Arthroplasty: A Retrospective Cohort Study in Japan. J Clin Med 2024; 13:1291. [PMID: 38592115 PMCID: PMC10932041 DOI: 10.3390/jcm13051291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/15/2024] [Accepted: 02/22/2024] [Indexed: 04/10/2024] Open
Abstract
Background: This study investigated the association between obesity and short-term patient-reported outcomes after total knee arthroplasty (TKA). Methods: The primary outcomes were the Western Ontario and McMaster Universities Osteoarthritis Index's (WOMAC) pain and function scores. Data were collected preoperatively and 2 and 4 weeks after surgery. Patients were stratified into three groups based on body mass index (BMI): normal weight (BMI < 24.99 kg/m2), overweight (25 ≤ BMI < 29.99 kg/m2), and obese (BMI ≥ 30 kg/m2). The associations between BMI and the WOMAC pain and function scores were assessed using generalized linear mixed models. Results: Among the 102 patients (median age: 75.0, women [85.3%]), 29.4%, 48.0%, and 22.5% were normal weight, overweight, and obese, respectively. The mean pain and function scores at baseline were similar across the BMI-stratified groups (p = 0.727 and 0.277, respectively). The pain score significantly improved 2 weeks post-surgery (p = 0.001). The function score improved significantly 4 weeks post-surgery (p < 0.001). The group and group-by-time interaction effects lacked statistical significance. Conclusions: All patients statistically and clinically showed relevant pain reduction and functional improvement shortly after TKA, irrespective of their obesity status. These data may help healthcare professionals discuss the expectations of pain amelioration and functional improvement with TKA candidates.
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Affiliation(s)
- Ryu Ishimoto
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba 305-8575, Japan;
- Department of Rehabilitation Medicine, Ibaraki Prefectural University of Health Sciences Hospital, Ami 300-0331, Japan
| | - Hirotaka Mutsuzaki
- Center for Medical Science, Ibaraki Prefectural University of Health Sciences, Ami 300-0394, Japan
- Department of Orthopaedic Surgery, Ibaraki Prefectural University of Health Sciences Hospital, Ami 300-0331, Japan
| | - Yukiyo Shimizu
- Department of Rehabilitation Medicine, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Kenichi Yoshikawa
- Department of Physical Therapy, Ibaraki Prefectural University of Health Sciences Hospital, Ami 300-0331, Japan
| | - Kazunori Koseki
- Department of Physical Therapy, Ibaraki Prefectural University of Health Sciences Hospital, Ami 300-0331, Japan
| | - Ryoko Takeuchi
- Department of Orthopaedic Surgery, Ibaraki Prefectural University of Health Sciences Hospital, Ami 300-0331, Japan
| | - Shuji Matsumoto
- Department of Rehabilitation Medicine, Ibaraki Prefectural University of Health Sciences Hospital, Ami 300-0331, Japan
- Center for Medical Science, Ibaraki Prefectural University of Health Sciences, Ami 300-0394, Japan
| | - Yasushi Hada
- Department of Rehabilitation Medicine, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
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Su J, Wan H, Pang Y, Lu Y, Liang J, Yan Z, Xu S, Sun T. Clinical, Radiographic, and MRI Evaluation of All-Inside Medial Meniscus Posterior Root Repair via Suture Fixation to the Posterior Cruciate Ligament Versus Partial Meniscectomy: Results at 3-Year Follow-up. Orthop J Sports Med 2023; 11:23259671231180545. [PMID: 37435421 PMCID: PMC10331207 DOI: 10.1177/23259671231180545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 02/26/2023] [Indexed: 07/13/2023] Open
Abstract
Background Medial meniscus posterior root tears (MMPRTs) disrupt the integrity and hoop tension of the meniscus, leading to cartilage degeneration and accelerated osteoarthritis (OA) progression. The management of patients with MMPRT is controversial, and the efficacy of different treatment options is unclear. Purpose To compare the clinical, radiographic, and magnetic resonance imaging (MRI) outcomes of patients with MMPRT between trans-posterior cruciate ligament (trans-PCL) all-inside repair and partial meniscectomy. Study Design Cohort study; Level of evidence, 3. Methods We identified patients with MMPRT who underwent trans-PCL all-inside repair (group AR) or partial meniscectomy (group PM) between 2015 and 2019 at a single institution. The trans-PCL all-inside repair was performed by suturing the torn meniscus root to the PCL fibers. Patient-reported outcomes as well as radiographic and MRI outcomes were collected at baseline and final follow-up. Clinical failure was defined as conversion to total knee arthroplasty (TKA), and Kaplan-Meier survival analysis was used to investigate the survival rates of patients with different surgical procedures. Results Included were 29 patients in group AR and 31 patients in group PM (mean age, 62.69 and 60.68 years, respectively; mean follow-up, 2.91 ± 1.33 and 3.45 ± 1.50 years, respectively). There were no differences in baseline patient characteristics between the groups. All patient-reported outcome scores improved significantly in both groups at the final follow-up. When we compared final outcomes between the groups, group AR had less joint space narrowing (P = .010), less Kellgren-Lawrence OA grade progression (P = .002), and less medial meniscal extrusion (MME; P = .002) than group PM. In addition, group AR showed less progression of bone marrow lesions and cartilage lesions (P < .05) than group PM. The rate of conversion to TKA was 6.90% in group AR and 29.0% in group PM. The 5-year survival rates in the AR and PM groups were 82.6% and 59.8%, respectively (P = .153). Conclusion Trans-PCL all-inside repair for MMPRTs was associated with greater improvement in clinical function, better radiographic results, less MME and cartilage degeneration, and a lower rate of subsequent TKA compared with partial meniscectomy.
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Affiliation(s)
- Jiarong Su
- Arthritis Clinic and Research Center, Peking University, People’s Hospital, Beijing, China
| | - Hongyan Wan
- Department of Radiology, Lonfu Hospital, Beijing, China
| | - Yingchang Pang
- Arthritis Clinic and Research Center, Peking University, People’s Hospital, Beijing, China
| | - Yanli Lu
- Arthritis Clinic and Research Center, Peking University, People’s Hospital, Beijing, China
| | - Jiaming Liang
- Arthritis Clinic and Research Center, Peking University, People’s Hospital, Beijing, China
| | - Zhigang Yan
- Department of Radiology, Lonfu Hospital, Beijing, China
| | - Sibo Xu
- Arthritis Clinic and Research Center, Peking University, People’s Hospital, Beijing, China
| | - Tiezheng Sun
- Arthritis Clinic and Research Center, Peking University, People’s Hospital, Beijing, China
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Huang Y, Lascarides P, Ngai W, Steele K, Hummer CD. Three Weekly Intra-Articular Injections of Hylan G-F 20 vs Arthrocentesis in Patients with Chronic Idiopathic Knee Osteoarthritis: A Multicenter, Evaluator- and Patient-Blinded, Randomized Controlled Trial. CURRENT THERAPEUTIC RESEARCH 2023; 99:100707. [PMID: 37408828 PMCID: PMC10319210 DOI: 10.1016/j.curtheres.2023.100707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 05/22/2023] [Indexed: 07/07/2023]
Abstract
Background Knee osteoarthritis is a leading cause of disability worldwide. Symptoms can vary over time, leading to episodes of worsened symptoms known as flares. Intra-articular injection of hyaluronic acid has demonstrated long-term symptomatic relief in the broader knee osteoarthritis population, although its use in the flare population has not been extensively examined. Objective To assess the efficacy and safety of 3 once-weekly intra-articular injections of hylan G-F 20 (as single and repeat courses) in patients with chronic knee osteoarthritis, including a subpopulation that experienced flare. Methods Prospective randomized controlled, evaluator- and patient-blinded, multicenter trial with 2 phases: hylan G-F 20 vs arthrocentesis only (control) and 2 courses vs single-course hylan G-F 20. Primary outcomes were visual analog scale (0-100 mm) pain scores. Secondary outcomes included safety and synovial fluid analysis. Results Ninety-four patients (104 knees) were enrolled in Phase I, with 31 knees representing flare patients. Seventy-six patients (82 knees) were enrolled in Phase II. Long-term follow-up was 26 to 34 weeks. In flare patients, hylan G-F 20 showed significantly more improvement than the controls for all primary outcomes except pain at night (P = 0.063). Both 1 and 2 courses of hylan G-F 20 showed significant improvements from baseline for primary outcomes with no differences in efficacy between groups in the intention-to-treat population at the end of Phase II. Two courses of hylan G-F 20 showed better improvement in pain with motion (P = 0.0471) at long-term follow-up. No general side effects were reported, and local reactions (pain/swelling of the injected joint) resolved within 1 to 2 weeks. Hylan G-F 20 was also associated with reduced effusion volume and protein concentration. Conclusions Hylan G-F 20 significantly improves pain scores vs arthrocentesis in flare patients with no safety concerns. A repeat course of hylan G-F 20 was found to be well tolerated and efficacious.
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Affiliation(s)
- Yili Huang
- Zucker School of Medicine at Hofstra/Northwell, Northwell Phelps Hospital, Sleepy Hollow, New York
| | - Peter Lascarides
- Northwell Health, Northern Westchester Hospital, Mount Kisco, New York
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Giorgino R, Albano D, Fusco S, Peretti GM, Mangiavini L, Messina C. Knee Osteoarthritis: Epidemiology, Pathogenesis, and Mesenchymal Stem Cells: What Else Is New? An Update. Int J Mol Sci 2023; 24:ijms24076405. [PMID: 37047377 PMCID: PMC10094836 DOI: 10.3390/ijms24076405] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/22/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023] Open
Abstract
Osteoarthritis (OA) is a chronic disease and the most common orthopedic disorder. A vast majority of the social OA burden is related to hips and knees. The prevalence of knee OA varied across studies and such differences are reflected by the heterogeneity of data reported by studies conducted worldwide. A complete understanding of the pathogenetic mechanisms underlying this pathology is essential. The OA inflammatory process starts in the synovial membrane with the activation of the immune system, involving both humoral and cellular mediators. A crucial role in this process is played by the so-called “damage-associated molecular patterns” (DAMPs). Mesenchymal stem cells (MSCs) may be a promising option among all possible therapeutic options. However, many issues are still debated, such as the best cell source, their nature, and the right amount. Further studies are needed to clarify the remaining doubts. This review provides an overview of the most recent and relevant data on the molecular mechanism of cartilage damage in knee OA, including current therapeutic approaches in regenerative medicine.
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8
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Kim JS, Borges S, Clauw DJ, Conaghan PG, Felson DT, Fleming TR, Glaser R, Hart E, Hochberg M, Kim Y, Kraus VB, Lapteva L, Li X, Majumdar S, McAlindon TE, Mobasheri A, Neogi T, Roemer FW, Rothwell R, Shibuya R, Siegel J, Simon LS, Spindler KP, Nikolov NP. FDA/Arthritis Foundation osteoarthritis drug development workshop recap: Assessment of long-term benefit. Semin Arthritis Rheum 2022; 56:152070. [PMID: 35870222 PMCID: PMC9452453 DOI: 10.1016/j.semarthrit.2022.152070] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/05/2022] [Accepted: 07/11/2022] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To summarize proceedings of a workshop convened to discuss the current state of science in the disease of osteoarthritis (OA), identify the knowledge gaps, and examine the developmental and regulatory challenges in bringing these products to market. DESIGN Summary of the one-day workshop held virtually on June 22nd, 2021. RESULTS Speakers selected by the Planning Committee presented data on the current approach to assessment of OA therapies, biomarkers in OA drug development, and the assessment of disease progression and long-term benefit. CONCLUSIONS Demonstrated by numerous failed clinical trials, OA is a challenging disease for which to develop therapeutics. The challenge is magnified by the slow time of onset of disease and the need for clinical trials of long duration and/or large sample size to demonstrate the effect of an intervention. The OA science community, including academia, pharmaceutical companies, regulatory agencies, and patient communities, must continue to develop and test better clinical endpoints that meaningfully reflect disease modification related to long-term patient benefit.
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Affiliation(s)
- Jason S Kim
- The Arthritis Foundation, 1355 Peachtree St NE, Suite 600, Atlanta, GA 30309, USA.
| | | | | | | | | | | | - Rachel Glaser
- US Food and Drug Administration, Silver Spring, MD, USA
| | | | - Marc Hochberg
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - Yura Kim
- US Food and Drug Administration, Silver Spring, MD, USA
| | | | | | | | | | | | | | - Tuhina Neogi
- Boston University School of Medicine, Boston, MA, USA
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Yang G, Wang K, Song H, Zhu R, Ding S, Yang H, Sun J, Wen X, Sun L. Celastrol ameliorates osteoarthritis via regulating TLR2/NF-κB signaling pathway. Front Pharmacol 2022; 13:963506. [PMID: 36034791 PMCID: PMC9399520 DOI: 10.3389/fphar.2022.963506] [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: 06/07/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Objectives: Osteoarthritis (OA) is a joint disease characterized by degeneration of joint cartilage and is a significant cause of severe joint pain, physical disability, and impaired quality of life in the aging population. Celastrol, a Chinese herbal medicine, has attracted wide interests because of its anti-inflammatory effects on a variety of diseases. This study aimed to investigate the effect of celastrol on OA as well as the mechanisms in vivo and in vitro. Methods: A rat knee OA model was established using “medial collateral ligament transection (MCLT) + partial meniscectomy (pMMT)”. Eight weeks after surgery, the OA rats started to receive intra-articular injection of celastrol (1 mg/kg) once a week. Safranin O-fast green (S&F) and hematoxylin and eosin (H&E) staining were used to estimate histopathological changes. Micro-CT was used to evaluate bone volume of the subchondral bone of the knee joint. Chondrocytes were isolated from the knee cartilage of rats and OA patients. Enzyme linked immunosorbent assay (ELISA), Western Blot (WB), Polymerase Chain Reaction (PCR), and Immunohistochemistry (IHC) were used to detect the expression of inflammatory factors and stromal proteins, respectively. Results: We found that celastrol treatment significantly delayed the progression of cartilage damage with a significant reduction in osteophyte formation and bone resorption in OA rat model. In IL-1β-stimulated rat chondrocytes, celastrol significantly suppressed the production of inflammatory factors such as cyclooxygenase-2 (COX2), interleukin-6 (IL-6), and prostaglandin E2 (PEG2), and reduced IL-1β-induced matrix degradation by down-regulating the expression of matrix metalloproteinase 13 (MMP13). In addition, we found that toll-like receptor 2 (TLR2) was up-regulated in OA patients and rat knee OA models, while celastrol inhibited TLR2 signal and its downstream nuclear factor-kappa B (NF-κB) phosphorylation. Conclusion: In summary, celastrol may improve OA by inhibiting the TLR2/NF-κB signaling pathway, which provides innovative strategies for the treatment of OA.
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Affiliation(s)
- Guangxia Yang
- Nanjing Drum Tower Hospital, Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Kai Wang
- Department of Rheumatology, Affiliated Huai’an No 1 People’s Hospital of Nanjing Medical University, Huaian, Jiangsu Province, China
| | - Hua Song
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Rujie Zhu
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
| | - Shuai Ding
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Hui Yang
- Nanjing Drum Tower Hospital, Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jian Sun
- Department of Rheumatology, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu Province, China
- *Correspondence: Jian Sun, ; Xin Wen, ; Lingyun Sun,
| | - Xin Wen
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
- *Correspondence: Jian Sun, ; Xin Wen, ; Lingyun Sun,
| | - Lingyun Sun
- Nanjing Drum Tower Hospital, Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
- *Correspondence: Jian Sun, ; Xin Wen, ; Lingyun Sun,
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Quayle J, Klasan A, Frampton C, Young SW. Do TKAs in Patients with Higher BMI Take Longer, and is the Difference Associated with Surgeon Volume? A Large-database Study from a National Arthroplasty Registry. Clin Orthop Relat Res 2022; 480:714-721. [PMID: 34797227 PMCID: PMC8923610 DOI: 10.1097/corr.0000000000002047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 08/02/2021] [Accepted: 10/20/2021] [Indexed: 01/31/2023]
Abstract
BACKGROUND Increased surgical time in TKA may impact economic costs and clinical outcomes. Prior work has found that TKAs in patients with high BMI take longer, and these patients may be at greater risk for postoperative complications like infection. However, these studies included small numbers of patients and surgeons from single institutions and they did not consider surgeon volume. QUESTIONS/PURPOSES Using the New Zealand Joint Registry (NZJR), we asked: (1) Is there a relationship between increasing patient BMI and TKA operative time? (2) Is the effect of BMI on surgical time less pronounced among surgeons who perform more TKAs per year than those who perform fewer? METHODS Data were collected from the NZJR between January 2010 and December 2018 as it is the only national registry that records both BMI and surgical time. Primary TKA performed for osteoarthritis by surgeons with more than 50 TKAs over the period of the study were identified. BMI and operative time (skin incision to closure in minutes) were recorded. Patients with the following were excluded: lateral parapatellar or minimally invasive approaches; navigated, patient-specific instrumentation, or robot-assisted TKA; uncemented or hybrid fixation; those with procedures performed by a trainee (all or part); or a nonosteoarthritic indication. Of 64,108 TKAs performed during the study period, a total of 42% (27,057) met our inclusion criteria. The primary outcome was the effect of BMI on operative time. Operative time is expressed in minutes as a mean for each single-unit BMI increase across all surgeons, controlled for other variables that might influence operative time such as patella resurfacing and cruciate-retaining versus posterior-stabilized designs. Overall, the mean operative time (skin incision to closure) was 79 ± 22 minutes. Surgical experience was assessed by subdividing surgeons into six groups according to the number of TKAs performed annually (< 10, 10 to 24, 25 to 49, 50 to 74, 75 to 99, and > 100). Statistical analyses were performed including a general linear model to assess the independent association between BMI and operative time, allowing for the effects of other patient and surgical features. In addition, linear regression analyses explored the associations between BMI and operative time in the whole group and within surgical volume groups. RESULTS There was an association between increasing BMI and increasing surgical duration. The mean operative time increased from 75 ± 22 minutes in patients with a normal BMI of 25 kg/m2 to 87 ± 24 minutes in patients with a BMI of 40 kg/m2 to 94 ± 28 minutes in patients with a BMI > 50 kg/m2 (p < 0.001). Surgeons performing fewer than 25 TKAs per year took 14% longer to perform a TKA on a patient with a BMI of 40 kg/m2 than on a patient with a normal BMI of 25 kg/m2. However, surgeons performing greater than 25 TKAs per year took 10% longer. CONCLUSION In this study, an increase BMI was associated with increased surgical time in TKA. Surgical duration for high-volume surgeons appears less influenced by increases in BMI than lower volume surgeons. Although the absolute increase in duration was small, prolonged surgical time may reduce theater productivity. Even though the issues around managing patients with high BMI are multifactorial and complex, considerations from these findings include ensuring appropriate theater scheduling and possibly referring patients with high BMI to specialist centers. Further studies should focus on assessing the effectiveness of such measures in reducing complications and improving outcomes in patients with elevated BMI. LEVEL OF EVIDENCE Level III, therapeutic study.
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Affiliation(s)
- Jonathan Quayle
- Trauma and Orthopaedic Department, Salisbury District Hospital, Salisbury, United Kingdom
| | - Antonio Klasan
- Department for Orthopaedics and Traumatology, Kepler University Hospital, Linz, Austria
- Johannes Kepler University Linz, Linz, Austria
| | | | - Simon W. Young
- Department of Orthopaedics, North Shore Hospital, Takapuna, Auckland, New Zealand
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11
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Allen KD, Thoma LM, Golightly YM. Epidemiology of osteoarthritis. Osteoarthritis Cartilage 2022; 30:184-195. [PMID: 34534661 PMCID: PMC10735233 DOI: 10.1016/j.joca.2021.04.020] [Citation(s) in RCA: 181] [Impact Index Per Article: 90.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 04/01/2021] [Accepted: 04/19/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To summarize the current state of the evidence regarding osteoarthritis (OA) prevalence, incidence and risk factors at the person-level and joint-level. DESIGN This was a narrative review that took a comprehensive approach regarding inclusion of potential risk factors. The review complements prior reviews of OA epidemiology, with a focus on new research and emerging topics since 2017, as well as seminal studies. RESULTS Studies continue to illustrate the high prevalence of OA worldwide, with a greater burden among older individuals, women, some racial and ethnic groups, and individuals with lower socioeconomic status. Modifiable risk factors for OA with the strongest evidence are obesity and joint injury. Topics of high interest or emerging evidence for a potential association with OA risk or progression include specific vitamins and diets, high blood pressure, genetic factors, metformin use, bone mineral density, abnormal joint shape and malalignment, and lower muscle strength/quality. Studies also continue to highlight the heterogenous nature of OA, with strong interest in understanding and defining OA phenotypes. CONCLUSIONS OA is an increasingly prevalent condition with worldwide impacts on many health outcomes. The strong evidence for obesity and joint injury as OA risk factors calls for heightened efforts to mitigate these risks at clinical and public health levels. There is also a need for continued research regarding how potential person- and joint-level risk factors may interact to influence the development and progression of OA.
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Affiliation(s)
- K D Allen
- Thurston Arthritis Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Center for Health Services Research in Primary Care, Department of Veterans Affairs Medical Center, Durham, NC, USA.
| | - L M Thoma
- Thurston Arthritis Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Division of Physical Therapy, Department of Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Y M Golightly
- Thurston Arthritis Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Division of Physical Therapy, Department of Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Injury Prevention Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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12
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Fatima S, Khan B, Khan OY, Amjad M, Zehra S, Azhar A. Tetra-primers ARMS-PCR Based Association Analyses of Synonymous and Intronic Variants in the ADAM12 Gene with Susceptibility to Knee Osteoarthritis: A Case-Control Study. Biochem Genet 2022; 60:1695-1715. [PMID: 35083608 DOI: 10.1007/s10528-022-10189-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 01/05/2022] [Indexed: 11/28/2022]
Abstract
Genetic variations in a disintegrin and metalloprotease 12 (ADAM12) gene may contribute to develop Osteoarthritis (OA) that is characterized by cartilage matrix degradation and osteophytes formation. Therefore, the aim of present study was to analyze the association between the ADAM12 gene variants and knee OA predisposition. Tetra-primers ARMS-PCR was employed, to genotype the ADAM12 gene polymorphisms (rs1044122 and rs1871054) in 400 knee OA patients and equal number of age-matched controls. The association between ADAM12 gene variants and OA susceptibility was estimated using the Chi-square, logistic regression, haplotypes and linkage analyses. A significant association of rs1044122 (genotype: χ2 = 18.94; P < 0.001, allele: χ2 = 19.10; P < 0.001) and rs1871054 (genotype: χ2 = 10.04; P = 0.007, allele: χ2 = 10.57; P = 0.001) was observed with increased OA susceptibility. The variant genotype of rs1044122 increased OA risk more than twice [odds ratio (OR) 2.20; P = 0.001] and the risk was higher in females (OR 2.43; P = 0.001). The variant genotype of rs1871054 was perceived to almost double the risk in females (OR 1.97; P = 0.003). Moreover, a significant association of rs1044122 and rs1871054 under the additive genetic model (P < 0.001 and P = 0.002, respectively) was observed. The targeted ADAM12 gene polymorphisms, showed significant association with knee OA susceptibility. Females harboring the polymorphisms might be at risk. Besides, the haplotype CC of rs1044122 and rs1871054 in the ADAM12 gene may double knee OA risk. These findings may help in determining the etiology of OA and recognizing the people at risk of developing knee OA.
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Affiliation(s)
- Sehrish Fatima
- The Karachi Institute of Biotechnology and Genetic Engineering (KIBGE), Faculty of Science, University of Karachi, Karachi, Pakistan.
| | - Bushra Khan
- The Karachi Institute of Biotechnology and Genetic Engineering (KIBGE), Faculty of Science, University of Karachi, Karachi, Pakistan
| | - Obaid Yusuf Khan
- Department of Genetics, Faculty of Science, University of Karachi, Karachi, Sindh, Pakistan
| | - Maryam Amjad
- The Karachi Institute of Biotechnology and Genetic Engineering (KIBGE), Faculty of Science, University of Karachi, Karachi, Pakistan
| | - Sitwat Zehra
- The Karachi Institute of Biotechnology and Genetic Engineering (KIBGE), Faculty of Science, University of Karachi, Karachi, Pakistan
| | - Abid Azhar
- The Karachi Institute of Biotechnology and Genetic Engineering (KIBGE), Faculty of Science, University of Karachi, Karachi, Pakistan
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13
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Cao F, Chen Y, Wang X, Wu LM, Tian M, Li HY, Si HB, Shen B. Therapeutic effect and potential mechanisms of intra-articular injections of miR-140-5p on early-stage osteoarthritis in rats. Int Immunopharmacol 2021; 96:107786. [PMID: 34162150 DOI: 10.1016/j.intimp.2021.107786] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/29/2021] [Accepted: 05/12/2021] [Indexed: 02/08/2023]
Abstract
MicroRNAs (miRs) receive extensive attention in osteoarthritis (OA) pathogenesis in recent years, and our previous study confirmed that an intra-articular injection (IAJ) of miR-140-5p alleviates early-stage OA (EOA) progression in rats. This study aims to investigate the therapeutic effect and potential mechanisms of single IAJ (SIAJ) of miR-140-5p on different stage OA and multiple IAJs (MIAJ) of miR-140-5p on EOA. Firstly, the OA model was surgically induced in rats, nine were treated with IAJ of Cy5-miR-140-5p at one week after surgery, and fluorescence distribution was analyzed at different times. Then, 72 rats were treated with SIAJ of miR-140-5p at different stages or MIAJ of miR-140-5p at one week after surgery, and OA progression was evaluated macroscopically and histologically at different times. Finally, the downstream targets and underlying molecular mechanisms of miR-140-5p were predicted by bioinformatics and partially validated. As a result, the intra-articularly injected miR-140-5p entered cartilage and could be taken up by chondrocytes rapidly. IAJ(s) of miR-140-5p improved the behavioral scores, chondrocyte number, cartilage thickness, and pathological scores to varying degrees. Specifically, the earlier a SIAJ of miR-140-5p was administrated, the better the therapeutic effect; meanwhile, MIAJ of miR-140-5p exhibited a better therapeutic effect than SIAJ on EOA. Eighty-four potential target genes and mechanisms of rno-miR-140-5p were predicted, and the effect of miR-140-5p on the potential target genes VEGFA and JAG1 was experimentally validated. Collectively, IAJs of miR-140-5p effectively alleviate EOA progression by modulating multiple biological processes and pathways in rats, representing a promising therapeutic for EOA.
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Affiliation(s)
- Fei Cao
- Orthopedic Research Institute & Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, China; Department of Orthopedics, Chengdu First People's Hospital, Chengdu 610041, China
| | - Yang Chen
- Key Laboratory of Transplant Engineering and Immunology, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xing Wang
- Orthopedic Research Institute & Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Li-Min Wu
- Orthopedic Research Institute & Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Mei Tian
- Department of Ultrasound, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Han-Yu Li
- Clinical Medicine of Traditional Chinese and Western Medicine, Southwest Medical University, Luzhou 646000, China
| | - Hai-Bo Si
- Orthopedic Research Institute & Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Bin Shen
- Orthopedic Research Institute & Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, China.
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14
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Abstract
PURPOSE OF REVIEW Current thinking in the study of posttraumatic osteoarthritis (PTOA) is overviewed: the osteoarthritis which follows acute joint injury. The review particularly highlights important publications in the last 18 months, also reflecting on key older literature, in terms of what have we have we learned and have yet to learn from PTOA, which can advance the osteoarthritis field as a whole. RECENT FINDINGS PTOA is a mechanically driven disease, giving insight into mechanical drivers for osteoarthritis. A mechanosensitive molecular tissue injury response (which includes activation of pain, degradative and also repair pathways) is triggered by acute joint injury and seen in osteoarthritis. Imaging features of PTOA are highly similar to osteoarthritis, arguing against it being a different phenotype. The inflammatory pathways activated by injury contribute to early joint symptoms. However, later structural changes appear to be dissociated from traditional measures of synovial inflammation. SUMMARY PTOA remains an important niche in which to understand processes underlying osteoarthritis and seek interventional targets. Whether PTOA has true molecular or clinical differences to osteoarthritis as a whole remains to be understood. This knowledge is important for a field where animal modelling of the disease relies heavily on the link between injury and osteoarthritis.
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Affiliation(s)
- Fiona E Watt
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Oxford, UK
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15
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Cui A, Li H, Wang D, Zhong J, Chen Y, Lu H. Global, regional prevalence, incidence and risk factors of knee osteoarthritis in population-based studies. EClinicalMedicine 2020; 29-30:100587. [PMID: 34505846 PMCID: PMC7704420 DOI: 10.1016/j.eclinm.2020.100587] [Citation(s) in RCA: 435] [Impact Index Per Article: 108.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Knee osteoarthritis (OA) is a major cause of disability in the elderly, however, there are few studies to estimate the global prevalence, incidence, and risk factors of knee OA. METHODS For this study, we searched PUBMED, EMBASE and SCOPUS from inception to April 4, 2020, without language restriction. We identified eligible studies with information on the prevalence or incidence of knee OA in population-based observational studies and extracted data from published reports. We did random-effects meta-analysis to generate estimates. This study was registered with PROSPERO (CRD42020181035). FINDINGS Out of 9570 records identified, 88 studies with 10,081,952 participants were eligible for this study. The pooled global prevalence of knee OA was 16⋅0% (95% CI, 14⋅3%-17⋅8%) in individuals aged 15 and over and was 22⋅9% (95% CI, 19⋅8%-26⋅1%) in individuals aged 40 and over. Correspondingly, there are around 654⋅1 (95% CI, 565⋅6-745⋅6) million individuals (40 years and older) with knee OA in 2020 worldwide. The pooled global incidence of knee OA was 203 per 10,000 person-years (95% CI, 106-331) in individuals aged 20 and over. Correspondingly, there are around annual 86⋅7 (95% CI, 45⋅3-141⋅3) million individuals (20 years and older) with incident knee OA in 2020 worldwide. The prevalence and incidence varied substantially between individual countries and increased with age. The ratios of prevalence and incidence in females and males were 1⋅69 (95% CI, 1⋅59-1⋅80, p<0⋅00) and 1⋅39 (95% CI, 1⋅24-1⋅56, p<0⋅00), respectively. INTERPRETATION Our study provides the global prevalence (16⋅0% [95% CI, 14⋅3%-17⋅8%]) and incidence (203 per 10,000 person-years [95% CI, 106-331]) of knee OA. These findings can be used to better assess the global health burden of knee OA. Further prospective cohort studies are warranted to identify modifiable risk factors for providing effectively preventive strategies in the early stages of the disease. FUNDING This work was supported by grants from the National Natural Science Foundation of China (nos. 81772384 and 81572174).
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Affiliation(s)
| | | | - Dawei Wang
- Department of Orthopaedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai 519000, Guangdong, China
| | - Junlong Zhong
- Department of Orthopaedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai 519000, Guangdong, China
| | - Yufeng Chen
- Department of Orthopaedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai 519000, Guangdong, China
| | - Huading Lu
- Department of Orthopaedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai 519000, Guangdong, China
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16
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Driban JB, Harkey MS, Barbe MF, Ward RJ, MacKay JW, Davis JE, Lu B, Price LL, Eaton CB, Lo GH, McAlindon TE. Risk factors and the natural history of accelerated knee osteoarthritis: a narrative review. BMC Musculoskelet Disord 2020; 21:332. [PMID: 32471412 PMCID: PMC7260785 DOI: 10.1186/s12891-020-03367-2] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 05/25/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Osteoarthritis is generally a slowly progressive disorder. However, at least 1 in 7 people with incident knee osteoarthritis develop an abrupt progression to advanced-stage radiographic disease, many within 12 months. We summarize what is known - primarily based on findings from the Osteoarthritis Initiative - about the risk factors and natural history of accelerated knee osteoarthritis (AKOA) - defined as a transition from no radiographic knee osteoarthritis to advanced-stage disease < 4 years - and put these findings in context with typical osteoarthritis (slowly progressing disease), aging, prior case reports/series, and relevant animal models. Risk factors in the 2 to 4 years before radiographic manifestation of AKOA (onset) include older age, higher body mass index, altered joint alignment, contralateral osteoarthritis, greater pre-radiographic disease burden (structural, symptoms, and function), or low fasting glucose. One to 2 years before AKOA onset people often exhibit rapid articular cartilage loss, larger bone marrow lesions and effusion-synovitis, more meniscal pathology, slower chair-stand or walking pace, and increased global impact of arthritis than adults with typical knee osteoarthritis. Increased joint symptoms predispose a person to new joint trauma, which for someone who develops AKOA is often characterized by a destabilizing meniscal tear (e.g., radial or root tear). One in 7 people with AKOA onset subsequently receive a knee replacement during a 9-year period. The median time from any increase in radiographic severity to knee replacement is only 2.3 years. Despite some similarities, AKOA is different than other rapidly progressive arthropathies and collapsing these phenomena together or extracting results from one type of osteoarthritis to another should be avoided until further research comparing these types of osteoarthritis is conducted. Animal models that induce meniscal damage in the presence of other risk factors or create an incongruent distribution of loading on joints create an accelerated form of osteoarthritis compared to other models and may offer insights into AKOA. CONCLUSION Accelerated knee osteoarthritis is unique from typical knee osteoarthritis. The incidence of AKOA in the Osteoarthritis Initiative and Chingford Study is substantial. AKOA needs to be taken into account and studied in epidemiologic studies and clinical trials.
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Affiliation(s)
- Jeffrey B Driban
- Division of Rheumatology, Allergy & Immunology, Tufts Medical Center, 800 Washington Street, Box #406, Boston, MA, 02111, USA.
| | - Matthew S Harkey
- Division of Rheumatology, Allergy & Immunology, Tufts Medical Center, 800 Washington Street, Box #406, Boston, MA, 02111, USA.,Department of Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, USA
| | - Mary F Barbe
- Department of Anatomy and Cell Biology, Temple University School of Medicine, 3500 North Broad Street, Philadelphia, PA, 19140, USA
| | - Robert J Ward
- Department of Radiology, Tufts Medical Center, 800 Washington Street, Boston, MA, 02111, USA
| | - James W MacKay
- Department of Radiology, University of Cambridge School of Clinical Medicine, Box 218, Level 5, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK.,Department of Radiology, Norwich Medical School, University of East Anglia, Research Park NR4 7U1, Norwich, UK
| | - Julie E Davis
- Milken Institute of Public Health, The George Washington University, 950 New Hampshire Ave NW, Washington, DC, 20052, USA
| | - Bing Lu
- Brigham and Women's Hospital and Harvard Medical School, 75 Francis Street PBB-B3, Boston, MA, 02115, USA
| | - Lori Lyn Price
- The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, 800 Washington Street, Box #63, Boston, MA, 02111, USA.,Tufts Clinical and Translational Science Institute, Tufts University, 800 Washington Street, Box #63, Boston, MA, 02111, USA
| | - Charles B Eaton
- Center for Primary Care and Prevention, Alpert Medical School of Brown University, 111 Brewster Street, Pawtucket, RI, 02860, USA
| | - Grace H Lo
- Medical Care Line and Research Care Line, Houston Health Services Research and Development (HSR&D) Center of Excellence Michael E. DeBakey VAMC, Houston, TX, USA.,Section of Immunology, Allergy, and Rheumatology, Baylor College of Medicine, Houston, TX. 1 Baylor Plaza, BCM-285, Houston, TX, 77030, USA
| | - Timothy E McAlindon
- Division of Rheumatology, Allergy & Immunology, Tufts Medical Center, 800 Washington Street, Box #406, Boston, MA, 02111, USA
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