Location



The lateral malleolus is the distal portion of the fibula, which forms the lateral boney prominence at the ankle joint. The lateral malleolus lies more posterior and inferior when compared to the medial malleolus.

Significance



Tenderness, swelling, and ecchymosis over the lateral malleolus may be evidence of a fracture, while tenderness, swelling, and ecchymosis at the tip of the lateral malleolus may be evidence of an avulsion fracture. Stress fractures of the fibula usually occur 8cm proximal to the tip of the lateral malleolus and may be identified by tenderness in that area.

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