75-year-old female patient with medial knee pain. Question of chondromalacia, meniscal tear. MENISCI: The posterior horn of the medial meniscus is abnormally small in size with increased signal intensity consistent with degeneration and fragmentation. Increased signal intensity within the body of the medial meniscus likely represents complex tearing. The lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is loss of the articular cartilage of the medial femoral condyle overlying the posterior horn of the medial meniscus, which extends over a 1.6 cm distance. This appears to have progressed from the prior examination. Furthermore, there is thinning of the articular cartilage anteriorly as well. There is diffuse thinning of the articular cartilage of the lateral femoral condyle with a 0.5 cm full-thickness defect posteriorly. There is fraying/fissuring of the articular cartilage of the lateral patellar facet and median eminence, without full thickness defect, with underlying subchondral cystic change, appearing similar to the prior study.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1. Tearing and degeneration of the medial meniscus as described above.2. Chondromalacia, most predominately affecting the medial compartment, which appears slightly progressed from the prior study.