63-year-old female with knee buckling and popping sensation. Presents with right knee pain. MENISCI: The medial and lateral meniscus appear intact.ARTICULAR CARTILAGE AND BONE: There is a full-thickness articular cartilage cleft with delamination along the weightbearing surface of the lateral femoral condyle above the posterior horn of the meniscus. There is a full-thickness articular cartilage cleft along the weightbearing surface of the medial femoral condyle above the anterior horn of the meniscus. The lateral facet of the patella and femoral trochlea are completely devoid of articular cartilage. There is full-thickness articular cartilage degeneration along the medial facet of the patella, centrally, with underlying subchondral cyst formation. There are tricompartmental osteophytes.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Osteoarthritis of the right knee with full-thickness articular cartilage clefts and degeneration as described above. 2. Moderate to large joint effusion. Other findings as described above.