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
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