Superior dislocation of the fibular head associated with a tibia fracture.

Superior dislocation of the fibular head associated with a fractured tibia occurred in four cases with a direct, severe trauma to the tibia. In one case there was permanent peroneal nerve damage. This injury is somewhat analogous to the fracture-dislocation of the Monteggia type in the forearm. To diagnose secondary dislocations of the fibula and treat the condition early, the knee joint should be carefully examined before and after X-ray of all fractures of the tibia.