Traumatic recurrent posterior dislocation of the radial head. A case report.

Traumatic recurrent isolated posterior dislocation of the radial head occurred in a 56-year-old woman. The differential diagnosis included congenital dislocation, neurovascular disorders, tumors of the forearm, and Monteggia-type fracture-dislocation. The etiology of the injury is obscure. The treatment of choice depends on the age of the patient and the status of the elbow. The characteristics distinguishing this case from others previously presented in the literature include the recurrence, posterior displacement, and age of the patient.