المؤلفون: Lowenstein, Natalie A., Chang, Yuchiao, Mass, Hanna, Mercurio, Angela M., Ukogu, Chierika, Katz, Jeffrey N., Matzkin, Elizabeth G.

المصدر: American Journal of Sports Medicine; Jan2024, Vol. 52 Issue 1, p116-123, 8p

مصطلحات موضوعية: PREOPERATIVE care, STATISTICS, CONFIDENCE intervals, ARTHROSCOPY, MULTIPLE regression analysis, AGE distribution, MENISCECTOMY, HEALTH outcome assessment, CASE-control method, VISUAL analog scale, ACTIVITIES of daily living, PRE-tests & post-tests, DECISION making, DESCRIPTIVE statistics, QUALITY assurance, ODDS ratio, BODY mass index, MENISCUS injuries, PAIN management

مستخلص: Background: Preoperative risk factors contributing to poor outcomes after arthroscopic partial meniscectomy (APM) have not yet been consolidated and codified into an index scoring system used to predict APM success. Purpose: To create an index score using available preoperative factors to predict the likelihood of favorable postoperative outcomes after APM. Study Design: Case-control study; Level of evidence, 3. Methods: A consecutive cohort of patients undergoing primary APM were enrolled in this study. Patients completed pre- and postoperative patient-reported outcome measure (PROM) questionnaires that included the Knee injury and Osteoarthritis Outcome Score (KOOS), visual analog scale (VAS) for pain, Veterans RAND 12-Item Health Survey (VR-12 Physical and Mental), and Marx Activity Rating Scale (MARS). Multivariable logistic regression models were performed to evaluate independent predictors of KOOS Pain, Symptoms, and Activities of Daily Living scores and achievement of the minimal clinically important difference (MCID) and substantial clinical benefit (SCB). The authors assigned points to each variable proportional to its odds ratio, rounded to the nearest integer, to generate the index score. Results: In total, 468 patients (mean age, 49 years [SD, 10.4 years; range, 19-81 years]) were included in this study. In the univariate analysis, shorter symptom duration, lower Kellgren-Lawrence (KL) grade, lower preoperative KOOS Pain value, and lower VR-12 Physical score were associated with a higher likelihood of clinical improvement at 1 year. In the multivariable model for clinical improvement with MCID, symptom duration (<3 months: OR, 3.00 [95% CI, 1.45-6.19]; 3-6 months: OR, 2.03 [95% CI, 1.10-3.72], compared with >6 months), KL grade (grade 0: OR, 3.54 [95% CI, 1.66-7.54]; grade 1: OR, 3.04 [95% CI, 1.48-6.26]; grade 2: OR, 2.31 [95% CI, 1.02-5.27], compared with grade 3), and preoperative KOOS Pain value (score <45: OR, 3.00 [95% CI, 1.57-5.76]; score of 45-60: OR, 2.80 [95% CI, 1.47-5.35], compared with score >60) were independent significant predictors for clinical improvement. The scoring algorithm demonstrated that a higher total score predicted a higher likelihood of achieving the MCID: 0 = 40%, 1 = 68%, 2 = 80%, 3 = 89%, and 4 = 96%. Conclusion: Using this model, the authors developed an index score that, using preoperative factors, can help identify which patients will achieve clinical improvement after APM. Longer symptom duration and higher KL grade were associated with a decreased likelihood of clinical improvement as measured by KOOS Pain at 1 year postoperatively. [ABSTRACT FROM AUTHOR]

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المؤلفون: Mass, Hanna¹ (AUTHOR), Katz, Jeffrey N.^1,2,3,4 (AUTHOR) jnkatz@bwh.harvard.edu

المصدر: Skeletal Radiology. Nov2023, Vol. 52 Issue 11, p2045-2055. 11p.

مصطلحات موضوعية: *OSTEOARTHRITIS, *KNEE osteoarthritis, *KNEE pain, *MENISCUS injuries, *PATHOLOGY, *OLDER people, *AGE groups

مستخلص: Importance: Knee osteoarthritis (OA) is a common cause of pain and disability in older persons, affecting approximately 14 million individuals in the USA. Meniscal damage is also common in this age group with a prevalence of 35% in a middle-aged and older community sample and 82% in persons with evidence of radiographic knee osteoarthritis. This paper systematically reviews evidence on the association of meniscal pathology and incident radiographic knee OA. Observations: We included 15 articles, published between 2013 and 2021, assessing the relationship between meniscal pathology and OA incidence (Fig. 1). The menisci are crucial load-bearing structures, and the resulting increase in biomechanical stress due to meniscal damage increases the risk for OA development. While some discrepancies are present in the literature, a clinically meaningful association has been generally established between the presence of a meniscal tear or meniscal extrusion and subsequent development of incident OA. Of note, larger radial tears as well as complex and more severe tears exhibit the strongest association with the development of incident OA. The relationship between other features of meniscal morphology—such as meniscal volume and meniscal coverage—and incident OA is less clearly documented. Conclusions and relevance: The early detection of meniscal pathology can be used to trigger preventative and therapeutic strategies designed to avert or delay knee OA in this at-risk population. [ABSTRACT FROM AUTHOR]

المؤلفون: Katz, Jeffrey N., Collins, Jamie E., Jones, Morgan, Spindler, Kurt P., Marx, Robert G., Mandl, Lisa A., Levy, Bruce A., Wright, Rick, Jarraya, Mohamed, Guermazi, Ali, MacFarlane, Lindsey A., Losina, Elena, Chang, Yuchiao

المصدر: Arthritis Care & Research; Feb2023, Vol. 75 Issue 2, p340-347, 8p

مصطلحات موضوعية: KNEE pain, MENISCUS injuries, KNEE osteoarthritis, SYMPTOMS, MAGNETIC resonance imaging, KNEE injuries

مستخلص: Objective: Middle‐aged subjects with meniscal tear treated with arthroscopic partial meniscectomy (APM) experience greater progression of damage to joint structures on imaging than subjects treated nonoperatively. It is unclear whether these changes are clinically relevant. The goal of this study was to assess whether worsening in magnetic resonance imaging (MRI)–assessed tissue damage over 18 months leads to subsequent worsening in knee pain over the subsequent 3.5 years. Methods: We used data from the Meniscal Tear in Osteoarthritis Research (MeTeOR) trial of APM versus physical therapy for subjects ages ≥45 years with knee pain, cartilage damage, and meniscal tear. We assessed whether change in cartilage surface area damage score (and other structural measures) from baseline to 18 months, assessed on MRI with the MRI Osteoarthritis Knee Score (MOAKS) system, was associated with change in Knee Injury and Osteoarthritis Outcome Score (KOOS) pain score (range 0–100; 100 = worst) from 18 to 60 months. Results: The primary analysis included 168 subjects with complete MRI data at baseline and 18 months and KOOS data at 18 and 60 months. We did not observe clinically important associations between change in cartilage surface area score between baseline and 18 months and change in pain scores from 18 to 60 months. Pain scores in the worst tertile for cartilage surface area damage score progression worsened by 0.45 points more than in the best tertile (95% confidence interval –4.45, 5.35). Similarly, we did not observe clinically important associations between changes in bone marrow lesions, osteophytes, or synovitis and subsequent pain. Conclusion: We did not observe clinically important associations between early changes in cartilage damage and other structural measures and worsening in pain over the subsequent 3.5 years. Further follow‐up is required to assess this association over a longer follow‐up period. [ABSTRACT FROM AUTHOR]

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المؤلفون: Williams, Emma E., Katz, Jeffrey N., Leifer, Valia P., Collins, Jamie E., Neogi, Tuhina, Suter, Lisa G., Levy, Bruce, Farid, Alexander, Safran‐Norton, Clare E., Paltiel, A. David, Losina, Elena

المصدر: ACR Open Rheumatology; Oct2022, Vol. 4 Issue 10, p853-862, 10p

مصطلحات موضوعية: KNEE osteoarthritis, DISEASE progression, PHYSICAL therapy, ARTHROSCOPY, MENISCECTOMY, MEDICAL care costs, RISK assessment, TREATMENT effectiveness, COST effectiveness, DESCRIPTIVE statistics, SENSITIVITY & specificity (Statistics), MENISCUS injuries, QUALITY-adjusted life years

مستخلص: Objective: We examined the cost‐effectiveness of treatment strategies for concomitant meniscal tear and knee osteoarthritis (OA) involving arthroscopic partial meniscectomy surgery and physical therapy (PT). Methods: We used the Osteoarthritis Policy Model, a validated Monte Carlo microsimulation, to compare three strategies, 1) PT‐only, 2) immediate surgery, and 3) PT + optional surgery, for participants whose pain persists following initial PT. We modeled a cohort with baseline meniscal tear, OA, and demographics from the Meniscal Tear in Osteoarthritis Research (MeTeOR) trial of arthroscopic partial meniscectomy versus PT. We estimated risks and costs of arthroscopic partial meniscectomy complications and accounted for heightened OA progression post surgery using published data. We estimated surgery use rates and treatment efficacies using MeTeOR data. We considered a 5‐year time horizon, discounted costs, and quality‐adjusted life‐years (QALYs) 3% per year and conducted sensitivity analyses. We report incremental cost‐effectiveness ratios. Results: Relative to PT‐only, PT + optional surgery added 0.0651 QALY and $2,010 over 5 years (incremental cost‐effectiveness ratio = $30,900 per QALY). Relative to PT + optional surgery, immediate surgery added 0.0065 QALY and $3080 (incremental cost‐effectiveness ratio = $473,800 per QALY). Incremental cost‐effectiveness ratios were sensitive to optional surgery efficacy in the PT + optional surgery strategy. In the probabilistic sensitivity analysis, PT + optional surgery was cost‐effective in 51% of simulations at willingness‐to‐pay thresholds of both $50,000 per QALY and $100,000 per QALY. Conclusion: First‐line arthroscopic partial meniscectomy has a prohibitively high incremental cost‐effectiveness ratio. Under base case assumptions, second‐line arthroscopic partial meniscectomy offered to participants with persistent pain following initial PT is cost‐effective at willingness‐to‐pay thresholds between $31,000 and $473,000 per QALY. Our analyses suggest that arthroscopic partial meniscectomy can be a high‐value treatment option for patients with meniscal tear and OA when performed following an initial PT course and should remain a covered treatment option. [ABSTRACT FROM AUTHOR]

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المؤلفون: Collins, Jamie E., Shrestha, Swastina, Losina, Elena, Marx, Robert G., Guermazi, Ali, Jarraya, Mohamed, Jones, Morgan H., Levy, Bruce A., Mandl, Lisa A., Williams, Emma E., Wright, Rick W., Spindler, Kurt P., Katz, Jeffrey N.

المصدر: Arthritis & Rheumatology; Aug2022, Vol. 74 Issue 8, p1333-1342, 10p

مصطلحات موضوعية: KNEE osteoarthritis, RELATIVE medical risk, CARTILAGE, CONFIDENCE intervals, SYNOVITIS, ARTHROSCOPY, PHYSICAL therapy, TIME, MENISCECTOMY, REGRESSION analysis, TREATMENT effectiveness, DESCRIPTIVE statistics, MENISCUS injuries, SECONDARY analysis, POISSON distribution, EVALUATION

مستخلص: Objective: To estimate the risk of magnetic resonance imaging (MRI)–based structural changes in knee osteoarthritis (OA) among individuals with meniscal tear and knee OA, using MRIs obtained at baseline and 18 and 60 months after randomization in a randomized controlled trial of arthroscopic partial meniscectomy (APM) versus physical therapy (PT). Methods: We used data from the Meniscal Tear in Osteoarthritis Research (METEOR) trial. MRIs were read using the MRI OA Knee Score (MOAKS). We used linear mixed‐effects models to examine the association between treatment group and continuous MOAKS summary scores, and Poisson regression to assess categorical changes in knee joint structure. Analyses assessed changes in OA between baseline and month 18 and between months 18 and 60. We performed both intention‐to‐treat and as‐treated analyses. Results: The analytic sample included 302 participants. For both treatment groups, more OA changes were seen during the early interval than during the later interval. ITT analysis revealed that, between baseline and month 18, APM was significantly associated with an increased risk of having a worsening cartilage surface area score, involving both any worsening across all knee joint subregions (risk ratio [RR] 1.35 [95% confidence interval (95% CI) 1.14, 1.61]) and the number of subregions damaged (RR 1.44 [95% CI 1.13, 1.85]) having a worsening effusion‐synovitis score (RR 2.62 [95% CI 1.32, 5.21]), and having ≥1 additional subregion with osteophytes (RR 1.24 [95% CI 1.02, 1.50]). Significant associations were detected between months 18 and 60 only for having any subregion with a worsening osteophyte score (RR 1.28 [95% CI 1.04, 1.58]). Conclusion: These findings suggest that the association between APM and MRI‐based structural changes in knee OA is most apparent during the initial 18 months after surgery. The reason for attenuation of this association over longer follow‐up merits further investigation. [ABSTRACT FROM AUTHOR]

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المؤلفون: Santana, Daniel C., Oak, Sameer R., Jin, Yuxuan, Rothy, Alex, Lee, Ling-Ling, Katz, Jeffrey N., Winalski, Carl S., Duryea, Jeff, Jones, Morgan H.

المصدر: American Journal of Sports Medicine; Jul2022, Vol. 50 Issue 8, p2075-2082, 8p

مصطلحات موضوعية: KNEE radiography, SURGICAL complication risk factors, KNEE osteoarthritis, ARTHROSCOPY, MENISCECTOMY, CASE-control method, MAGNETIC resonance imaging, RISK assessment, COMPARATIVE studies, DESCRIPTIVE statistics, ARTICULAR cartilage, DATA analysis software, MENISCUS injuries, DISEASE risk factors

مستخلص: Background: Arthroscopic partial meniscectomy (APM) is widely performed and remains an important therapeutic option for patients with a meniscal tear. However, it is debated whether or not APM accelerates the progression of osteoarthritis (OA) in the long term. Purpose/Hypothesis: The purpose was to compare the progression of OA measured by the change in tibiofemoral joint space width (JSW)—a quantitative measure of OA radiographic severity—across 3 groups with a midterm follow-up: (1) patients undergoing APM; (2) those with a meniscal tear treated nonoperatively; and (3) those without a tear. We hypothesized that the reduction in JSW would be greatest in patients undergoing APM and least in those patients without a tear. Study Design: Cohort study; Level of evidence, 3. Methods: Using the Osteoarthritis Initiative cohort, a total of 144 patients were identified that underwent APM with at least 12 months of follow up and without previous knee surgery. Those with a meniscal tear who did not have APM (n = 144) and those without a tear (n = 144) were matched to patients who had APM by sex, age, Kellgren-Lawrence (KL) grade, and follow up time. Participants underwent magnetic resonance imaging at baseline. Knee radiographs to assess JSW were collected annually or biannually. The change in minimum medial compartment JSW was calculated using a validated automated method. A piecewise linear mixed effects model was constructed to examine the relationship between JSW decline over time and treatment group—adjusting for age, body mass index, smoking status, KL grade, and baseline JSW. Results: All groups had comparable baseline JSW—ranging from 4.33 mm to 4.38 mm. The APM group had a rate of JSW decline of −0.083 mm/mo in the first 12 months and −0.014 mm/mo between 12 and 72 months. The rate of JSW decline in the APM group was approximately 27 times greater in the first 12 months than that in the nonsurgical group (−0.003 mm/mo) and 5 times greater than that in the no tear group (−0.015 mm/mo); however, there was no significant difference between groups for 12 to 72 months (nonsurgical group: −0.009 mm/mo; no tear group: −0.010 mm/mo). The adjusted JSW in the APM group was 4.38 mm at baseline and decreased to 2.57 mm at 72 months; the JSW in the nonsurgical group declined from 4.31 mm to 3.73 mm, and in the no tear group it declined from 4.33 mm to 3.54 mm. There was a statistically significant difference in JSW change between baseline and 72 months for the APM group compared with the other groups (P <.001), but not between the nonsurgical and no tear groups (P =.12). Conclusion: In the first postoperative year, APM results in a faster rate of joint space narrowing compared with knees undergoing nonsurgical management of meniscal tears. Thereafter, there are comparable rates of OA progression regardless of the chosen management. APM results in a persistent decrease in JSW over at least 72 months. An untreated meniscal tear does not contribute to radiographic progression—assessed by JSW—as compared with an intact meniscus. [ABSTRACT FROM AUTHOR]

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المؤلفون: Katz, Jeffrey N.¹ jnkatz@bwh.harvard.edu, Shrestha, Swastina¹, Losina, Elena¹, Jones, Morgan H.², Marx, Robert G.³, Mandl, Lisa A.³, Levy, Bruce A.⁴, MacFarlane, Lindsey A.¹, Spindler, Kurt P.², Silva, Genevieve S.¹, Collins, Jamie E.¹, Brophy, Robert, Cole, Brian J., Stuart, Michael J., Matava, Matthew J., Wright, Rick W., Safran‐Norton, Clare E.

المصدر: Arthritis & Rheumatology. Feb2020, Vol. 72 Issue 2, p273-281. 9p.

مصطلحات موضوعية: *ARTHROSCOPY, *CONFIDENCE intervals, *MATHEMATICAL models, *MENISCECTOMY, *MENISCUS injuries, *OSTEOARTHRITIS, *PAIN, *PHYSICAL therapy, *TOTAL knee replacement, *THEORY, *TREATMENT effectiveness, *DISEASE incidence, *PROPORTIONAL hazards models, *MIDDLE age

مستخلص: Objective: To determine the 5‐year outcome of treatment for meniscal tear in osteoarthritis. Methods: We examined 5‐year follow‐up data from the Meniscal Tear in Osteoarthritis Research trial (METEOR) of physical therapy versus arthroscopic partial meniscectomy. We performed primary intent‐to‐treat (ITT) and secondary as‐treated analyses. The primary outcome measure was the Knee Injury and Osteoarthritis Outcome Score (KOOS) pain scale; total knee replacement (TKR) was a secondary outcome measure. We used piecewise linear mixed models to describe change in KOOS pain. We calculated 5‐year cumulative TKR incidence and used a Cox model to estimate hazard ratios (HRs) for TKR, with 95% confidence intervals (95% CIs). Results: Three hundred fifty‐one participants were randomized. In the ITT analysis, the KOOS pain scores were ~46 (scale of 0 [no pain] to 100 [most pain]) at baseline in both groups. Pain scores improved substantially in both groups over the first 3 months, continued to improve through the next 24 months (to ~18 in each group), and were stable at 24–60 months. Results of the as‐treated analyses of the KOOS pain score were similar. Twenty‐five participants (7.1% [95% CI 4.4–9.8%]) underwent TKR over 5 years. In the ITT model, the HR for TKR was 2.0 (95% CI 0.8–4.9) for subjects randomized to the arthroscopic partial meniscectomy group, compared to those randomized to the physical therapy group. In the as‐treated analysis, the HR for TKR was 4.9 (95% CI 1.1–20.9) for subjects ultimately treated with arthroscopic partial meniscectomy, compared to those treated nonoperatively. Conclusion: Pain improved considerably in both groups over 60 months. While ITT analysis revealed no statistically significant differences following TKR, greater frequency of TKR in those undergoing arthroscopic partial meniscectomy merits further study. [ABSTRACT FROM AUTHOR]

المؤلفون: MacFarlane, Lindsey A., Yang, Heidi, Collins, Jamie E., Guermazi, Ali, Jones, Morgan H., Spindler, Kurt P., Winter, Amelia R., Losina, Elena, Katz, Jeffrey N., Brophy, Robert H., Cole, Brian J., Levy, Bruce A., Mandl, Lisa A., Martin, Scott, Marx, Robert G., Matava, Mathew, Safran-Norton, Clare, Stuart, Michael, Wright, Rick

المصدر: American Journal of Sports Medicine; Mar2019, Vol. 47 Issue 3, p612-619, 8p

مصطلحات موضوعية: OSTEOARTHRITIS treatment, MENISCUS injuries, KNEE diseases, ARTHROSCOPY, LONGITUDINAL method, MAGNETIC resonance imaging, MENISCECTOMY, PHYSICAL therapy, REGRESSION analysis, BODY mass index, KNEE pain, DESCRIPTIVE statistics, THERAPEUTICS

مستخلص: Background: Arthroscopic partial meniscectomy (APM) is used to treat meniscal tears, although its efficacy is controversial. Purpose: This study used magnetic resonance imaging (MRI) to determine characteristics that lead to greater benefit from APM and physical therapy (PT) than from PT alone among patients with meniscal tear and knee osteoarthritis. Study Design: Cohort study; Level of evidence, 2. Methods: Using data from the Meniscal Tear in Osteoarthritis Research (MeTeOR) trial, the authors first assessed whether the effect of treatment on pain scores at 6 months differed according to baseline MRI features (bone marrow lesions, cartilage and meniscal damage). Second, the authors summed MRI features associated with differential pain relief between APM and PT to create a "damage score," which included bone marrow lesion number and cartilage damage size with possible values of 0 (least damage), 1 (moderate), and 2 (greatest). The authors used linear models to determine whether the association between damage score and pain relief at 6 months differed for APM versus PT. Results: The study included 220 participants: 13%, had the least damage; 52%, moderate; and 34%, greatest. Although treatment type did not significantly modify the association of damage score and change in pain (P interaction = .13), those with the least damage and moderate damage had greater improvement with APM than with PT in Knee injury and Osteoarthritis Outcome Score pain subscale—by 15 and 7 points, respectively. Those with the greatest damage had a similar improvement with APM and PT. Conclusion: Among patients with osteoarthritis and meniscal tear, those with less intra-articular damage on MRI may have greater improvement in pain with APM and PT than with PT alone. However, these results should be interpreted cautiously owing to the limited sample size. [ABSTRACT FROM AUTHOR]

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المؤلفون: MacFarlane, Lindsey A., Yang, Heidi, Collins, Jamie E., Jarraya, Mohamed, Guermazi, Ali, Mandl, Lisa A., Martin, Scott D., Wright, John, Losina, Elena, Katz, Jeffrey N., Brophy, Robert H., Levy, Bruce A., Marx, Robert G., Matava, Mathew, Safran‐Norton, Clare, Spindler, Kurt P., Stuart, Michael, Dahm, Diane L., Wright, Rick

المصدر: Arthritis & Rheumatology; Jan2019, Vol. 71 Issue 1, p73-81, 9p

مصطلحات موضوعية: CARTILAGE diseases, CONFIDENCE intervals, KNEE diseases, MAGNETIC resonance imaging, MENISCUS injuries, OSTEOARTHRITIS, PHYSICAL therapy, POISSON distribution, REGRESSION analysis, RELATIVE medical risk, SYNOVITIS, DISEASE progression, DISEASE complications, DISEASE risk factors, DIAGNOSIS, THERAPEUTICS

مستخلص: Objective: Synovitis is a feature of knee osteoarthritis (OA) and meniscal tear and has been associated with articular cartilage damage. This study was undertaken to examine the associations of baseline effusion‐synovitis and changes in effusion‐synovitis with changes in cartilage damage in a cohort with OA and meniscal tear. Methods: We analyzed data from the Meniscal Tear in Osteoarthritis Research (MeTeOR) trial of surgery versus physical therapy for treatment of meniscal tear. We performed semiquantitative grading of effusion‐synovitis and cartilage damage on magnetic resonance imaging, and dichotomized effusion‐synovitis as none/small (minimal) and medium/large (extensive). We assessed the association of baseline effusion‐synovitis and changes in effusion‐synovitis with changes in cartilage damage size and depth over 18 months, using Poisson regression models. Analyses were adjusted for patient demographic characteristics, treatment, and baseline cartilage damage. Results: We analyzed 221 participants. Over 18 months, effusion‐synovitis was persistently minimal in 45.3% and persistently extensive in 21.3% of the patients. The remaining 33.5% of the patients had minimal synovitis on one occasion and extensive synovitis on the other. In adjusted analyses, patients with extensive effusion‐synovitis at baseline had a relative risk (RR) of progression of cartilage damage depth of 1.7 (95% confidence interval [95% CI] 1.0–2.7). Compared to those with persistently minimal effusion‐synovitis, those with persistently extensive effusion‐synovitis had a significantly increased risk of progression of cartilage damage depth (RR 2.0 [95% CI 1.1–3.4]). Conclusion: Our findings indicate that the presence of extensive effusion‐synovitis is associated with subsequent progression of cartilage damage over 18 months. The persistence of extensive effusion‐synovitis over time is associated with the greatest risk of concurrent cartilage damage progression. [ABSTRACT FROM AUTHOR]

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المؤلفون: Bennell, Kim L.¹ k.bennell@unimelb.edu.au, Katz, Jeffrey N.²

المصدر: Lancet. 11/17/2018, Vol. 392 Issue 10160, p2144-2145. 2p.

مصطلحات موضوعية: SURGICAL complications, ARTHROSCOPY, MENISCECTOMY, MENISCUS (Anatomy), MENISCUS injuries

مستخلص: The article offers information on the results of a study by researcher Simon G. F. Abram and colleagues on the adverse outcomes of arthroscopic partial meniscectomy. Topics include the risk of serious complications following arthroscopic partial meniscectomy, long-term risks of arthroscopic partial meniscectomy, and efficacy of the surgical procedure.