45-year-old female patient with locking/catching, knee gives out over several years. MENISCI: There is slight medial extrusion of the body of the medial meniscus but we see no discrete tear. The lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is degeneration of the articular cartilage of the lateral facet of the patella associated with a fluid-filled cleft and subchondral cysts, appearing similar to the prior study accounting for technical differences. There is also focal degeneration of the superior aspect of the femoral trochlear cartilage, which may be new compared to the prior study. Again seen is degeneration of the articular cartilage of the medial compartment that has progressed compared to the prior study with new full-thickness defects of the medial femoral condyle and medial tibial plateau with underlying edema. There is new edema type signal underlying the medial tibial plateau. Heterogeneity of the articular cartilage of the weightbearing portion of the lateral femoral condyle indicates degeneration with subchondral cysts, similar to that seen on the prior study. There are tricompartmental osteophytes.LIGAMENTS: The anterior cruciate and posterior cruciate ligaments are intact. The collateral ligaments are intact.EXTENSOR MECHANISM: Mild increased signal intensity in the patellar tendon insertion suggests tendinosis. Mild edema is noted within the soft tissues anterior to the patellar tendon.ADDITIONAL
1. Tricompartmental osteoarthritis as described above which appears to have progressed compared to the prior study in the medial compartment.2. Possible loose bodies as described above.3. Mild extrusion of the body of the medial meniscus but no discrete tear.4. Other findings as described above.