Efficacy of Arthroscopic Meniscal Surgery Versus Conservative Management on Knee Pain and Functional Outcomes: A Meta-Analysis of Randomized Controlled Trials

Knee pain is a prevalent issue among older adults, often resulting from degenerative joint changes, and significantly impacts functionality and quality of life. While arthroscopic meniscal surgery is a common intervention for managing knee pain, its effectiveness compared to conservative treatments remains debated. This meta-analysis aims to compare the efficacy of arthroscopic meniscal surgery versus conservative management in alleviating knee pain and enhancing functional outcomes in patients with degenerative meniscal tears. We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) sourced from PubMed, Web of Science, and Scopus. The focus was on studies evaluating knee pain and function in patients aged 40 and older. Primary outcomes included knee pain reduction, measured using scales such as the Knee Injury and Osteoarthritis Outcome Score (KOOS), Visual Analog Scale (VAS), and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and functional improvement, assessed by scores like the Knee Injury and Osteoarthritis Outcome Score for Activities of Daily Living (KOOS ADL) and Lysholm Knee Scoring Scale (Lysholm). A random-effects model was employed to account for variability across studies, with heterogeneity quantified using I². Nine RCTs, encompassing a total of 1,200 patients, met the inclusion criteria. Pain outcomes indicated similar improvements in both the arthroscopic surgery and conservative management groups. The pooled standardized mean difference (SMD) for pain was -0.01 (95% CI: -0.36 to 0.34). Functional outcomes also showed minimal differences between treatments, with an SMD of -0.04 (95% CI: -0.21 to 0.13). Moderate heterogeneity (I²=70%) was observed, attributed to variations in conservative management protocols and patient characteristics across studies. Arthroscopic meniscal surgery does not offer significant advantages over conservative management in reducing knee pain or improving function in patients with degenerative meniscal tears.