22-year-old woman with right knee pain MENISCI: The medial and lateral menisci are normal in appearance.ARTICULAR CARTILAGE AND BONE: There is marked thinning of the patellar cartilage. The femoral trochlear groove is shallow, and the patella is laterally subluxed.LIGAMENTS: The ACL is not well visualized and is at least partially torn. The PCL appears intact. The MCL and LCL complex appear intact. EXTENSOR MECHANISM: The patellar and quadriceps tendons are normal in appearance.ADDITIONAL
1. Femoral trochlear dysplasia with lateral subluxation of the patella. 2. The ACL is not well visualized and is at least partially torn. 