Knee pain. Evaluate for meniscal tear. MENISCI: Extensive signal abnormality through the majority of the anterior horn of the lateral meniscus indicates severe degeneration and fragmentation. This tearing extends into the body of the lateral meniscus, with blunting of the free edge and degenerative tearing of the undersurface of the meniscus. There is irregularity of the free edge of the posterior horn of the medial meniscus, with poorly defined intrasubstance signal that extends to the free edge and tibial articular surface, suggesting degenerative tearing. There is also intrasubstance degeneration of the body of the medial meniscus. The anterior horn of the medial meniscus appears normal.ARTICULAR CARTILAGE AND BONE: There is severe degeneration of the articular cartilage of the lateral facet of the patella and lateral facet of the femoral trochlea. There is also full-thickness cartilage loss along the lateral tibial plateau, as well as along the lateral femoral condyle above the posterior horn of the meniscus. There are small subchondral cysts in the lateral tibial plateau and femoral trochlea. Mild cartilage degeneration affects the medial compartment.LIGAMENTS: The cruciate and collateral limits are intact.EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1. Tears of the lateral and medial meniscus, as described above.2. Osteoarthritis, synovitis, and Baker's cyst, as described above.