61-year-old male with left knee pain. Rule out ligamentous/meniscal injury. Somewhat suboptimal examination secondary to patient motion artifact.MENISCI: There is increased linear branching signal abnormality within the posterior horn of the medial meniscus which extends to the femoral and tibial articular surface consistent with a complex tear. There is deformity of the posterior horn extending to the body of the meniscus. There is associated subcentimeter foci of fluid signal intensity along the posteromedial aspect of the meniscus consistent with meniscal cyst formation. The anterior horn appears intact. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is a focal full-thickness articular cartilage defect along the lateral femoral condyle. There is bone marrow edema in the underlying area as well as subchondral cyst formation. There is fraying and irregularity of the articular cartilage along the lateral facet of the patella.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism is intact. ADDITIONAL
1. Complex tearing of the posterior horn of the medial meniscus with associated parameniscal cyst formation.2. Articular cartilage degeneration as described above.