Subcutaneous Ulnar Nerve Transposition

Abstract

Cubital tunnel syndrome is one of the most common compression neuropathies affecting the upper extremity. Physical exam findings include loss of sensation, muscle weakness, and clawing of the fingers. More severe cases also show irreversible muscle atrophy, hand contractures, and loss of function. There are several approaches to treating cubital tunnel syndrome. Here, a subcutaneous anterior transposition was performed on this patient. The patient’s ulnar nerve subluxed upon elbow flexion and extension upon physical examination, which was a primary indication for choosing this surgical approach over other techniques. This procedure not only decompresses the affected nerve but also transposes the nerve anterior to the medial epicondyle so as to relieve strain on the nerve upon the full range of motion of the elbow.