Recurrent ankle sprains secondary to nonunion of a lateral malleolus fracture

Anteroposterior radiograph of the ankle joint taken 4 months after injury, showing nonunion of the tip of the lateral malleolar fracture.

T2 magnetic resonance image scan of the ankle confirming that the lateral malleolar tip fracture is related to the malleolus. Note the lack of interposed tissue between the fibula and the free fragment.

Mortise radiograph of the ankle joint 3 months after surgery showing that the fracture has healed.