Reason: R knee medial meniscus tear History: R knee pain Patient motion artifact limits multiple sequences.MENISCI: There is globular signal abnormality within the posterior horn of the medial meniscus indicating intrasubstance degeneration. No unstable meniscal tear is evident. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is subjective thinning of the articular cartilage along the lateral femoral condyle posteriorly. There is full-thickness articular cartilage degeneration along the lateral facet and median eminence of the patella with underlying subchondral signal abnormality. There is near full-thickness articular cartilage degeneration along the medial facet of the patella with underlying subchondral signal abnormality. There is a focal full-thickness articular cartilage defect along the inferior femoral trochlea, centrally, with underlying subchondral signal abnormality. There are tricompartmental osteophytes.LIGAMENTS: The cruciate and collateral ligaments appear intact. There is thickening and intermediate signal intensity within the proximal fibers of the lateral collateral ligament proper which may reflect prior injury or sprain. There is edema along the superficial band of the MCL indicating a sprain. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Osteoarthritis of the knee including articular cartilage degeneration most pronounced along the patellofemoral articulation.2. Sprain of the MCL.3. Intrasubstance degeneration of the medial meniscus without evidence of a meniscal tear.4. Moderate size joint effusion with small Baker's cyst.