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The patient encountered hyperextension of the knee which induced group of related lesions as follow:
- 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.