Right knee pain MENISCI: There is mild deformity of the free edge of the medial meniscus involving the posterior horn and body that could reflect prior surgical intervention in the correct clinical context. Additionally, there is poorly defined increased signal within the posterior horn and body representing degeneration however a more discrete linear component extends to the undersurface of the meniscus, consistent with a tear. This was not well seen on the prior exam. Furthermore, there is a defect along the undersurface of the meniscus which is also more prominent on the current exam and is suspicious for a displaced horizontal flap tear. The anterior horn is intact.The lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is tricompartmental degeneration and thinning of the articular cartilage particularly of the medial and patellofemoral compartments. Overall this appears similar to the prior exam. Subchondral edema within the medial tibial plateau appears similar as well; however the edema within the femoral condyle appears improved. LIGAMENTS: The ACL, PCL, MCL, and LCL are intact. EXTENSOR MECHANISM: The extensor mechanism is unremarkable.ADDITIONAL
1. Tricompartmental osteoarthritis of the knee, similar to the prior exam.2. Abnormal appearance of the medial meniscus, which may in part be the result of prior surgical intervention; however there is a new suspected tear of the medial meniscus with a probable horizontal undersurface flap present.