Study finds, Outcomes at 20 Years After Meniscectomy in Pati
A Study was conducted to report the outcomes of arthroscopic meniscectomy (AM) at 20 years of follow-up through timing/rate of conversion to total knee replacement (TKR) and Knee Injury and Osteoarthritis Outcome Score (KOOS), focusing on detection of specific predictor variables for these outcomes, in patients 50 to 70 years old.

A retrospective study was performed of 289 patients, ages at surgery 50 to 70 years, with diagnosis of degenerative meniscal tear who underwent arthroscopic meniscectomy. The following baseline data was collected: age, sex, injured meniscus (medial, lateral, or both), knee alignment, osteoarthritis (OA), associated lesion identified during arthroscopy, and associated procedure performed during arthroscopy.

--Female sex, older age, lateral meniscectomy, malalignment, and advanced chondral lesion were found to be significantly related to subsequent TKR.

--No significant correlation was found between amount of resection and subsequent TKR.

--Negative predictor factors to obtain equal or superior to age- and sex-adjusted KOOS scores were age 60 to 70 years at time of AM and lateral meniscectomy.

Finally, a 15.7 % conversion rate from AM to TKR was reported after 20 years, with a mean duration between surgeries of 7 years. Preoperative OA and chondral lesion, lateral meniscectomy, age at surgery, female sex, and malalignment were all linked with subsequent TKR 20 years following AM for degenerative meniscus tears. If patients have unfavorable predictor variables, the AM should not be recommended as a second-line treatment; instead, nonoperative management should be continued until TKR is required.