55-year-old female with pain. Evaluate for AVN. MENISCI: The medial meniscus appears intact. The anterior horn of the lateral meniscus is markedly truncated consistent with a radial tear. The posterior horn appears intact.ARTICULAR CARTILAGE AND BONE: There is near full-thickness articular cartilage degeneration of the weightbearing surface of the lateral femoral condyle above the posterior horn of the meniscus.LIGAMENTS: The cruciate and collateral ligaments appear intact. There is fluid between the superficial and deep fibers of the MCL which may represent an MCL bursitis.EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Tear of the anterior horn of the lateral meniscus. No evidence of avascular necrosis.2. Near full-thickness articular cartilage degeneration as described above.3. Findings consistent with a MCL bursitis.4. Small-to-moderate size joint effusion.5. Nonspecific subcutaneous edema about the knee.