Anterior interosseous nerve avulsion.
A 19-year-old man with a fracture of the distal humerus avulsed the anterior interosseous nerve. Avulsion of this nerve may be more common than previously believed. As shown by a cadaver study, the mechanism of injury is related to traction on the median nerve. Complete clinical assessment requires an accurate neurological examination; specifically, the integrity of the anterior interosseous nerve is tested, and a characteristic disturbance of pinch is identified. By treatment with a free nerve graft it is possible to achieve full functional recovery.
D000328:Adult; D003161:Compartment Syndromes / Q000209:etiology*; D005542:Forearm / Q000294:innervation*; D006801:Humans; D006810:Humeral Fractures / Q000150:complications*; D008297:Male