Nerve Transfer to Biceps Muscle Using a Part of Ulnar Nerve for C5-C6 Avulsion of the Brachial Plexus: Anatomical Study and Report of Four Cases

Four patients with C5-C6 root avulsion after brachial plexus injury were treated with a transfer of part of a normal functioning nerve in the arm to the motor nerve of the biceps. Ten percent of the bulk of the ulnar nerve was harvested for a suture directly to the motor nerve of the biceps with no significant impairment of hand function.