52-year-old male patient with right knee pain status post fall. Evaluate for lateral meniscus tear. MENISCI: The lateral and medial menisci are intact.ARTICULAR CARTILAGE AND BONE: There are bone contusions in the weightbearing portion of the lateral femoral condyle and the posterior aspect of the lateral tibial plateau. There is mild compression of the surface of the lateral femoral condyle overlying the contusion, compatible with a lateral notch sign. There are also nonspecific reactive marrow changes along the medial aspect of the medial femoral trochlea.There is partial thickness chondral fissuring in the apex of the patella.LIGAMENTS: There is at least a partial tear of the anterior cruciate ligament. Posterior cruciate ligament, medial collateral ligament, lateral collateral ligament complex, and patellar retinacula are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
At least partial anterior cruciate ligament tearing with characteristic bone contusions involving the lateral femoral condyle and posterior aspect of the lateral tibial plateau.