63-year-old female with pain. Evaluate for meniscal tear. MENISCI: There is increased signal abnormality and deformity of the posterior horn of the medial meniscus consistent with intrasubstance degeneration and complex degenerative tearing. There is, however, a focus of linear signal abnormality traversing the posterior horn, extending to the tibial articular surface, indicating a horizontal tear that extends to the body of the meniscus. There is a subcentimeter focus of fluid signal abnormality along the posterior aspect of the posterior horn of the medial meniscus indicating a parameniscal cyst. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is full-thickness articular cartilage degeneration affecting the patellofemoral joint with areas of the lateral facet of the patella and femoral trochlea completely devoid of articular cartilage with underlying degenerative subchondral signal abnormality. There is subjective thinning of the articular cartilage of the medial and lateral compartments. There is a nonspecific focus of bone marrow signal abnormality within the proximal fibula which may reflect degenerative change. There are tricompartmental osteophytes.LIGAMENTS: The cruciate and collateral ligaments appear intact EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Degeneration and tearing of the medial meniscus as described above.2. Osteoarthritis of the left knee with full-thickness articular cartilage degeneration most pronounced along the patellofemoral joint as described above.