Lateral

• Lateral collateral ligament injury:

  • Less common than a medial collateral ligament injury
  • Can occur in combination with other posterolateral complex structures including the peroneal nerve - careful neurovascular assessment is required
• Symptoms:

  • Mechanism of injury may be a direct blow to the medial aspect of the knee, or other varus stress
  • Usually acute onset of lateral knee pain
  • Cessation of activities
• Signs:

  • Tenderness over the lateral collateral ligament at the lateral joint line
  • Swelling/effusion
  • Instability or pain on varus stress test
  • May be paraesthesia or weakness of the lateral lower limb