61-year-old female with pain in left knee. Evaluate for medial meniscus tear. MENISCI: There is a complex tear of the posterior horn of the medial meniscus consisting of a large radial component as well as additional longitudinal tearing through the periphery of the posterior horn near its root. There is additional globular increased signal intensity within the body of the medial meniscus indicating intrasubstance degeneration and possible undersurface fraying. The anterior horn appears intact. There is slight medial extrusion of the body of the medial meniscus. The lateral meniscus appears normal.ARTICULAR CARTILAGE AND BONE: There is moderate degeneration of the articular cartilage of the patella particularly involving the medial facet and median eminence with focal full-thickness degeneration centrally along the median eminence associated with underlying subchondral cyst formation. There is also moderate degeneration of the articular cartilage of the medial tibiofemoral compartment with a small full-thickness defects in the weightbearing cartilage. There is minimal edema in the underlying medial tibial plateau which we suspect is degenerative in etiology. The articular cartilage of the lateral compartment appears intact.LIGAMENTS: The cruciate and collateral ligaments are intact. There is mild edema along the superior band of the medial collateral ligament which could represent a mild sprain in the appropriate clinical context.EXTENSOR MECHANISM: Extensor mechanism is intact.ADDITIONAL
1. Complex tear of the medial meniscus.2. Osteoarthritic changes and other findings as above.