Teenager with lateral malleolus pain after a motor vehicle accident

Radiograph of Salter-Harris Type I fracture of the distal fibula
AP radiograph of the ankle shows a tremendous amount of swelling of the lateral malleolus with the apex of the swelling centered on the distal fibular physis. There is a small bony fragment near the physis as well thought to be from an avulsion injury.

The diagnosis was a Salter-Harris Type I fracture of the distal fibula.