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Observation Versus Debridement of Unstable Chondral Lesions During Partial Meniscectomy: Analysis of Patient Outcomes and Degenerative Joint Disease at 5 Years in the Chondral Lesions And Meniscus Procedures (ChAMP) Randomized Controlled Trial. | LitMetric

Background: The purpose of this study was to examine the effect of debridement (CL-Deb) versus observation (CL-noDeb) of unstable chondral lesions on knee pain 5 years after arthroscopic partial meniscectomy (APM) in patients enrolled in the Chondral Lesions And Meniscus Procedures (ChAMP) Trial. Secondarily, other knee symptoms, function, general health, and the rate of additional surgery on the affected knee were examined.

Methods: Patients aged ≥30 years who had an unstable Outerbridge grade-II, III, or IV chondral lesion when undergoing APM were randomly allocated to the CL-Deb (n = 98) or CL-noDeb (n = 92) group; ∼80% in each group completed a 5-year follow-up. Outcomes were measured preoperatively and at 5 years postoperatively, and included the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Knee injury and Osteoarthritis Outcome Score (KOOS), visual analog scale (VAS) for pain, Short Form-36 (SF-36), physical knee measurements, knee radiographs, and rate of additional knee surgery at 5 years. The primary outcome was the 5-year WOMAC pain score. Group comparisons were made using the t test for continuous outcomes and the Fisher exact test for categorical outcomes.

Results: There were no significant differences between the groups with respect to the primary outcome, the WOMAC pain score (CL-Deb: 86.0 [95% confidence interval (CI): 82.9 to 89.1]) versus CL-noDeb: 88.3 [95% CI: 85.5 to 91.1]; p = 0.27), or secondary outcomes at 5 years. There were also no differences in radiographic measurements of joint-space narrowing in any compartment (medial or lateral tibiofemoral or medial, central, or lateral patellofemoral) as well as no difference in the rate of additional knee surgery within 5 years after APM between the CL-Deb and CL-noDeb groups.

Conclusions: Outcomes for the CL-Deb and CL-noDeb groups did not differ at 5 years postoperatively, suggesting that there is no long-term benefit of arthroscopic debridement of chondral lesions encountered during APM.

Level Of Evidence: Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.

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http://dx.doi.org/10.2106/JBJS.20.01582DOI Listing

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