61-year-old female with left knee pain for one year, pain is medial. History of breast cancer. Evaluate for meniscal tear versus chondral injury. MENISCI: There is linear increased signal abnormality within the posterior horn of the medial meniscus which extends to the tibial and femoral articular surfaces consistent with a complex tear, with a horizontal component, that extends into the body of the meniscus. The anterior horn appears intact. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is full-thickness articular cartilage degeneration along the medial femoral condyle, posteriorly, with a small amount of degenerative underlying subchondral signal abnormality. There is subjective thinning of the articular cartilage the medial and lateral tibiofemoral compartments. There is partial-thickness articular cartilage degeneration along the medial facet of the patella. There are tiny tricompartmental osteophytes.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Tearing of the medial meniscus as described above.2. Small joint effusion and Baker's cyst.3. Articular cartilage degeneration as described above. Other findings as described above.