Posterolateral Corner (PLC)

Introduction
- Approximately 7-16% knee ligament injuries are to the lateral ligamentous complex -
- isolated injuries to PLC are rare -
- usually combined with cruciate ligament injury (PCL > ACL)
- missed PLC injury diagnosis is common cause of ACL reconstruction failure
- Mechanisms -
- blow to anteromedial knee
- varus blow to flexed knee
- contact and noncontact hyperextension injuries
- knee dislocation -
- Associated injuries -
- common peroneal nerve (15-29%)
- vascular injury