Severe ulnar neuropathy after subcutaneous transposition in a collegiate tennis player.

We report the case of an "overhead" athlete (a collegiate tennis player) who developed severe ulnar neuropathy after anterior subcutaneous transposition and placement of a fasciodermal sling. Treatment consisted of opening the sling, excising suture material, releasing all other areas of potential compression, and performing anterior submuscular transposition of the ulnar nerve deep to the flexor muscle group. Two years after surgery, subjective symptoms were significantly improved, though the patient continued to experience mild medial-side elbow discomfort and intermittent paresthesia along the ulnar nerve distribution. Pain relief achieved without full sensory and motor recovery is consistent with results reported elsewhere. In short, extreme care must be taken when creating a fasciodermal sling during anterior subcutaneous transposition of the ulnar nerve.