63-year-old female patient with left medial knee pain. Evaluate for left medial meniscus tear. MENISCI: There is abnormal increased T2 intrasubstance signal within the medial meniscus that is compatible with degeneration. There is blunting of the free edge of the body of the medial meniscus, best seen on coronal images, likely due to a degenerative tear. The anterior horn of the lateral meniscus is diminutive and there is abnormal increased T2 intrasubstance signal within the lateral meniscus that is compatible with degeneration.ARTICULAR CARTILAGE AND BONE: There is tricompartmental osteophyte formation. There is marked chondral thinning of the medial and lateral facets of the patella with a full thickness chondral fissure in the lateral facet with underlying edema-like signal in the subchondral marrow. There is partial thickness chondral thinning of the weightbearing portions of the medial and lateral compartments. There is a full-thickness chondral defect in the lateral femoral trochlea, measuring 1.2 cm on sagittal images, with underlying reactive edema-like marrow signal abnormality.LIGAMENTS: There is fluid signal about the iliotibial band of the lateral collateral ligament complex that may represent inflammatory changes. Increased T2 signal within the anterior cruciate ligament is compatible with mucoid degeneration. The posterior collateral ligament, medial collateral ligament, and patellar retinacula are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Osteoarthritis with chondromalacia as described above. 2.Degeneration of the medial and lateral menisci with blunting of the free edge of the body of the medial meniscus, which may represent a degenerative tear.3.Fluid signal about the iliotibial band is suggestive of inflammatory changes.