Association of Early Knee Extension Range of Motion Deficits With Cartilage T2 Relaxation Following Anterior Cruciate Ligament Reconstruction

This study investigates the relationship between early knee extension range of motion (ROM) deficits at two months post-anterior cruciate ligament reconstruction (ACLR) and changes in cartilage composition, specifically T2 relaxation times, at six months. The authors hypothesize that individuals with extension deficits would show greater deterioration in cartilage quality, particularly in the medial femoral condyle. Results indicate that those with extension deficits experienced significant increases in T2 relaxation times, suggesting a potential link between early ROM recovery and the risk of developing osteoarthritis.