Medial Meniscus Posterior Root Repair in Knees With ≥5° of Varus Alignment Is Associated With Greater Osteoarthritis Progression Compared With <5° Varus Alignment

The authors aimed to assess the impact of mechanical alignment on the progression of osteoarthritis (OA) following isolated medial meniscus posterior root (MMPR) repair. Their findings indicate that knees with varus alignment (≥5°) experienced significantly greater OA progression, higher rates of repair failure, and increased conversion to total knee arthroplasty compared to those with normal alignment (<5°), despite similar patient-reported outcomes. The study highlights the importance of baseline alignment and repair integrity as critical factors influencing postoperative joint survival.