Extraarticular fracture, avulsion of fibular head

These are fractures of the proximal fibula, produced by an avulsion (traction) mechanism. The pathology is similar to a rupture of the collateral ligament.

Avulsion of fibular head can indicate several ligamental injuries (besides LCL, the insertion of biceps femoris and the fibula-popliteal lig.may also be avulsed).