Reason: r/o meniscal or ligamentous injury History: pain Due to to the patient's body habitus, a high-resolution coil could not be used. An alternative coil was used instead resulting in suboptimal image quality.MENISCI: There is enlargement of the body of the lateral meniscus with intrasubstance increased signal intensity indicating mucoid degeneration. This mucoid material extends through the peripheral fibers of the meniscus into the adjacent soft tissues resulting in a parameniscal cyst that extends along the periphery of the body and posterior horn of the lateral meniscus. Relatively mild intrasubstance degeneration is noted within the posterior horn of the medial meniscus. Despite the degree of intrasubstance degeneration, we see no definite communication with the articular surface. The lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: We see no articular cartilage defects. There is slight lateral translation of the patella relative to the femoral trochlea. Bone marrow signal intensity is normal.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The quadriceps and patellar tendons appear intact. The tibial tuberosity trochlear groove distance measures 19 mm, which is borderline abnormal. The Insall-Salvati ratios is within normal limits.
1. Extensive mucoid degeneration of the body of the lateral meniscus with parameniscal cyst formation, although we see no definite extension to the articular surface.2. Borderline elevated tibial tuberosity trochlear groove distance with slight lateral translation of the patella.