Knee Osteoarthritis after Arthroscopic Partial Meniscectomy: Prevalence and Progression of Radiographic Changes after 5 to 12 Years Compared with Contralateral Knee

J Knee Surg DOI: 10.1055/s-0038-1646926The purpose of this study was to study the clinical and radiographic changes in the knee after arthroscopic partial meniscectomy (APM) at a long-term follow-up compared with the contralateral knee. We assessed 57 patients (38 males and 19 females) with pre- and postoperative weight-bearing radiography with a follow-up ranging from 5.1 to 12.1 years (mean: 8.1) to analyze prevalence and progression of knee osteoarthritis (OA) after APM. We stratified patients according to body mass index (BMI), type of lesion (degenerative vs. traumatic), and side of meniscectomy (medial, lateral, and medial plus lateral). Patients were evaluated both clinically with Knee Osteoarthritis Outcome Score (KOOS) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score and radiographically with the Kellgren and Lawrence (K/L) score. Radiographic OA was defined as K/L grade 2 or worse. The prevalence of knee OA was 62.69% in the tibiofemoral compartment. The progression of knee OA was statistically significant, ranging from 17.2% preoperatively to 65.95% postoperatively (p = 0.001) in the medial compartment and from 17.64% preoperatively to 58.82% postoperatively (p = 0.0324) in the lateral compartment. The progression of knee OA in the patellofemoral compartment ranged from 5.26 to 42.10% (p = 0.001). The OA progression regarding BMI was higher into the obese group than the normal-weight group and greater in the degenerative ...
Source: Journal of Knee Surgery - Category: Orthopaedics Authors: Tags: Original Article Source Type: research