22-year-old male. Pain and swelling status post hyperextension injury for 2 to 3 months. MENISCI: The medial and lateral menisci are intact without evidence of a tear.ARTICULAR CARTILAGE AND BONE: Mild edema type signal within the anterior aspect of the medial femoral condyle and the anterior aspect of the lateral tibial plateau, perhaps representing bone contusions sustained at the time of injury. The articular cartilage is intact.LIGAMENTS: The cruciate and collateral ligaments are intact. The ligament of Wrisberg appears abnormally thickened with increased signal intensity, which may reflect prior injury.EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1. Bone contusions, as described above. We see no chondral injury.2. Thickening and increased signal intensity of the ligament of Wrisberg may indicate prior injury but the remaining ligamentous structures appear intact.