65-year-old female with lateral joint line tenderness. Rule out meniscus tear. MENISCI: There is linear increased signal abnormality and blunting of the body of the lateral meniscus which extends to the tibial articular surface, near the free edge of the meniscus, consistent with a horizontal tear. There is increased globular signal abnormality within the anterior horn of lateral meniscus which likely represents intrasubstance degeneration. There is extension of this signal abnormality to the tibial articular surface likely representing degenerative tearing/fraying. There is globular increased signal abnormality within the posterior horn of the medial meniscus consistent with intrasubstance degeneration. This signal abnormality extends to the tibial articular surface consistent with degenerative tearing/fraying. The body and anterior horn of the meniscus appear intact.ARTICULAR CARTILAGE AND BONE: There is partial-thickness articular cartilage degeneration along the posterior aspect of the lateral femoral condyle posterior to the posterior horn of the meniscus. No full-thickness or near full-thickness articular cartilage defects are identified. No bone marrow signal abnormality is identified. There are small tricompartmental osteophytes.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Tearing of the lateral meniscus.2. Degenerative tearing/fraying of the medial meniscus. 3. Small joint effusion with a moderate-sized Baker's cyst. 4. Degenerative osteoarthritic changes of the knee.