58-year-old male with left knee pain continued despite injections and physical therapy. Evaluate left knee for meniscus tear. MENISCI: There is globular signal abnormality within the posterior horn of the medial meniscus consistent with intrasubstance degeneration which extends to the tibial and femoral articular surfaces consistent with complex degenerative tearing extending to involve the body of the meniscus. The anterior horn appears intact. There is globular increased signal abnormality within the anterior horn and body of the lateral meniscus consistent with intrasubstance degeneration. The signal appears to extend to the tibial and femoral articular surfaces and body of the meniscus suggestive of degenerative tearing.ARTICULAR CARTILAGE AND BONE: There is near full-thickness to full-thickness articular cartilage degeneration along the medial facet of the patella. There is a partial-thickness defect of the articular cartilage along the medial facet of the patella more centrally. There is near full-thickness articular cartilage degeneration along the medial facet of the femoral trochlea. There is near full-thickness thinning of the articular cartilage along the lateral facet of the patella and lateral femoral trochlea with underlying subchondral signal abnormality. There is near full-thickness articular cartilage degeneration along the lateral tibial plateau. There is near full-thickness to full-thickness articular cartilage degeneration along the weightbearing surface of the medial femoral condyle. There are tricompartmental osteophytes.LIGAMENTS: The cruciate and collateral ligaments appear intact EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Complex degenerative tearing of the medial and lateral meniscus as described above. 2. Tricompartmental degenerative changes, including near full-thickness to full-thickness articular cartilage degeneration, as described above. 3. Small joint effusion and moderate-sized Baker's cyst.