21 year-old woman with history of lateral knee pain. MENISCI: The medial and lateral menisci appear intact.ARTICULAR CARTILAGE AND BONE: There is mildly increased signal of the medial facet of the patella without discrete tear or defect of the articular cartilage. Articular cartilage of the tibiofemoral compartments is intact. The marrow and cortical signal in the underlying bone is normal.LIGAMENTS: The anterior cruciate ligament, posterior cruciate ligament, medial collateral ligament, and lateral collateral ligament complex are intact.EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
Fraying of the articular cartilage over the medial facet of the patella, otherwise no additional finding to explain the patient's pain.