Female 55 years old with locking, catching, and right knee pain. Assess for medial meniscus tear. MENISCI: There is globular increased signal within the posterior horn of the medial meniscus indicating intrasubstance degeneration. Additionally, the posterior horn of the medial meniscus appears to terminate medial to its expected root attachment indicating a root tear. There is medial extrusion of the body of the medial meniscus. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is moderate to severe degeneration of the articular cartilage of the medial compartment with areas of full-thickness cartilage loss along the medial femoral condyle. There is edema-type signal within the medial femoral condyle and medial tibial plateau which is likely degenerative. There is moderate degeneration and near full-thickness fissuring of the medial facet of the trochlea and moderate degeneration of the articular cartilage of the lateral tibial plateau along the lateral tibial spine with a full-thickness cleft.LIGAMENTS: The cruciate and collateral ligaments are intact. Edema along the medial collateral ligament is likely associated with the aforementioned medial compartment pathology but could conceivably represent an MCL sprain in the correct clinical setting. EXTENSOR MECHANISM: The extensor mechanism is intact. There is mild nonspecific edema in the prepatellar soft tissues.ADDITIONAL
1. Degeneration and posterior root tear of the medial meniscus.2. Tricompartmental cartilage degeneration most severely affecting the medial compartment.3. Moderate joint effusion and other findings as above.