ABSTRACT
Median nerve entrapment can rarely occur above the elbow due to compression by the ligament of Struthers. This variant ligament typically connects a humeral supracondylar process with the medial epicondyle. The spur and the ligament of Struthers form the fibro-osseous roof of a small tunnel, through which the median nerve and the brachial (or ulnar) vessels traverse. The supracondylar spur, which is present in approximately 1% of the normal population, may be rudimentary or even absent. Other associated anatomic variants may include: high origin of the pronator teres, high division of the brachial artery, high origin of the anterior interosseous nerve branch, or variant position of the ulnar nerve.
