Reason: evaluate menisci History: medial joint line pain, effusion, "popping" Several sequences are limited by patient motion artifact.MENISCI: There is blunting of the body and posterior horn of the medial meniscus that may be due to tearing or prior partial meniscectomy. There is also increased signal intensity within the remaining body and posterior horn of the medial meniscus which extends to the femoral articular surface and likely to the tibial articular surface as well, indicating a complex tear with extension of signal abnormality through the periphery of the body of the meniscus and decompression into small parameniscal cysts. The signal abnormality includes a fluid-filled defect along the femoral articular surface of the body of the medial meniscus. There appears to be additional tearing of the peripheral fibers of the posterior horn of the medial meniscus. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is full-thickness degeneration of the articular cartilage of the medial femoral condyle above the torn posterior meniscal horn. More anteriorly, along the medial femoral condyle, there is also a more focal full-thickness articular cartilage defect above the free edge of the anterior horn of the medial meniscus. There is superficial fraying of the articular cartilage of the medial tibial plateau. There is a full-thickness defect with delamination of the articular cartilage of the lateral facet of the femoral trochlea. There is heterogeneity of the medial facet and central portions of the femoral trochlea representing additional areas of degeneration. The articular cartilage of the lateral compartment appears relatively intact. There are tricompartmental osteophytes.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Complex tearing of the medial meniscus.2. Osteoarthritis, particularly affecting the medial and patellofemoral compartments.3. Joint effusion and Baker's cyst.