Knee pain. MENISCI: There is abnormal signal intensity within the body and posterior horn of the medial meniscus indicating a complex tear which includes a horizontal component that extends to the femoral articular surface as well as a vertical component which appears to extend through the meniscus. There is also blunting of the free edge of the body of the medial meniscus. A focus of low signal intensity situated above the body of the medial meniscus medial to the medial femoral condyle is suspicious for a displaced flap fragment. There is slight medial extrusion of the body of the medial meniscus. The anterior horn of the medial meniscus appears intact. The lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is moderate diffuse degeneration of the articular cartilage of the medial facet of the patella with fissuring and delamination extending into the articular cartilage of the lateral facet. There is a superficial defect of the articular cartilage of the femoral trochlea centrally. There is partial thickness degeneration of the articular cartilage of the medial femoral condyle above the posterior horn of the medial meniscus. The articular cartilage of the lateral compartment appears relatively intact.LIGAMENTS: The cruciate ligaments appear intact. The medial collateral ligament appears intact. A collection of lobulated fluid signal intensity between the IT band and the lateral collateral ligament proper which measures approximately 17 mm in the AP dimension and 2 cm in the craniocaudal dimension may represent a ganglion or distended bursa. The structures of the LCL complex themselves appear intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Complex tear of the medial meniscus with possible displaced meniscal fragment in the medial gutter.2.Cartilaginous degeneration as described above.3.Baker's cyst and other findings as described above.