Distal humeral nonunion.

Nonunion is one of the most common and challenging complications of distal humeral fractures. Newer internal fixation principles and techniques have improved the ability of orthopaedic surgeons to achieve stable fixation of complex distal humeral fractures. However, some fractures will fail to unite, leaving the patient with an unstable, dysfunctional, and often painful upper extremity that requires additional surgery.