60-year-old female with knee pain. Evaluate for patellar chondral defect. MENISCI: There is globular increased signal abnormality within the posterior horn of the medial meniscus consistent with intrasubstance degeneration. There is degeneration of the anterior horn of the lateral meniscus near its root, with heterogeneous material anterior to the meniscus likely representing extrusion of mucoid material.ARTICULAR CARTILAGE AND BONE: There is severe osteoarthritis affecting the patellofemoral joint with much of the lateral facet of the patella, median eminence of the patella, and lateral facet of the femoral trochlea devoid of articular cartilage; this has progressed when compared to the prior study. There are underlying subchondral cysts. There is relatively mild degeneration of the articular cartilage of the medial facet of the patella and femoral trochlea. Subjectively, the articular cartilage of the medial tibiofemoral compartment appears thinned, but the articular cartilage of the lateral tibiofemoral compartment appears relatively spared. There are small tricompartmental osteophytes. There are small cysts within the intercondylar eminence of the tibia which are likely degenerative in etiology.LIGAMENTS: There is thickening and increased signal intensity in the anterior cruciate ligament likely representing mucoid degeneration. The PCL, MCL, and LCL appear intact.EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
Severe osteoarthritis of the patellofemoral joint, which has progressed compared to the prior study. Other findings as described above.