Posterior interosseous and ulnar nerve motor palsies after a minimally displaced radial neck fracture.

Peripheral nerve injury is a serious potential complication following an upper extremity fracture. A rare case of acute posterior interosseous nerve and ulnar nerve palsy following a minimally displaced radial neck fracture is reported. With nonsurgical management, both nerves demonstrated excellent functional recovery. Although rare, nerve palsies can occur during a variety of upper extremity clinical situations, including minimally displaced fractures, and the importance of a detailed neurologic examination cannot be overstated.