Posterior cruciate ligament avulsion fracture

The patient encountered hyperextension injury of the knee which induced groupwith resultant constellation of related lesions as followfindings:

• avulsion fracture of the PCL with bony fragment from its tibial attachment
• horizontal tear of the lateral meniscus with large parameniscal cyst
• abnormal signal within the belly of popliteus muscle likely hematoma with intact popliteal tendon
• bone bruise at the posterolateral corner of the tibial plateau

Lateral collateral ligament, biceps femoris tendon, popliteo-fibular ligament, arcuate ligament and iliotibial tracts are intact.