Reason: Left Knee Med Meniscus Tear vs Chondromalacia History: left knee pain MENISCI: There is faint intrasubstance signal within the posterior horn and body of the medial meniscus that extends to the tibial articular surface suggesting degenerative tearing/fraying, but we see no specific imaging features of an unstable tear. There is slight medial extrusion of the body of the medial meniscus. The anterior horn appears intact. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is moderate degeneration of the articular cartilage of the patella, particularly along the medial facet, with degeneration involving greater than 50% of the cartilage thickness. There is a small underlying subchondral cyst. We suspect there is also degeneration of the articular cartilage of the medial facet of the femoral trochlea, inferiorly. There is also near full-thickness degeneration of the articular cartilage along the weightbearing portion of the medial femoral condyle above the posterior horn of the meniscus. There is degeneration of the articular cartilage along the medial tibial plateau, just anterior to the anterior horn of the meniscus. There is also increased signal intensity within the articular cartilage of the weightbearing portion of the lateral femoral condyle suggesting focal degeneration. There are small tricompartmental osteophytes.LIGAMENTS: The cruciate ligaments appear intact, although there is perhaps mild mucoid degeneration. The collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Tricompartmental cartilage degeneration as described above.2. Degeneration and mild degenerative undersurface tearing of the medial meniscus.3. Lobulated and septated collection of fluid signal intensity posterior to the distal femur likely either representing ganglion formation arising from the medial head of the gastrocnemius or distention of the subgastrocnemius bursa. Other findings as described above.