Dislocation of the distal tibiofibular joint.

A case report of a patient with posterior dislocation of an intact fibula at the distal tibiofibular joint is presented. This rare injury is a variant of a Bosworth fracture, which is a posterior dislocation of the fibula usually accompanied by an oblique fibular fracture. The injury was initially treated by open reduction of the fibular dislocation, repair of avulsed lateral and deltoid ligaments, and placement of a syndesmotic screw. At one year postoperative, the patient has a poor result secondary to talar avascular necrosis and secondary degenerative ankle arthritis.