Elbow instability secondary to lateral epicondylar nounion in an adult.

Symptomatic nonunion of the lateral epicondyle of the elbow is a rare injury. We present the case of a 36-year-old woman who complained of elbow pain and instability several months after a conservatively treated lateral epicondyle fracture that evolved into nonunion. In order to reestablish elbow stability, the patient underwent removal of the nonunited epicondylar fragment and ligament repair, with excellent clinical outcome.