The Elbow

Aetiology

Neuropathy of the ulnar nerve, level with the elbow may result from:

Anatomical changes: arthrosis, fracture of the medial epicondyle, thickening of the medial collateral band, contracture of Sthruthers arcade or a hypertrophied fibrous band at the level of the flexor carpi ulnaris;
Recurrent dislocation of the ulnar nerve during elbow flexion. 16% of the normal population has an unstable ulnar nerve.
During elbow flexion the ulnar nerve may come out of its groove and slip over the epicondyle. There it becomes vulnerable to local pressure.
Recurrent subluxations may lead to serious neuropathy in sportsmen who perform repetitive flexion- extension movements (throwing and racket sports).

History

Sudden ache at the inner side of the elbow with 'popping' or 'snapping during flexion and extension of the elbow.
Referred pain at the ulnar aspect of the hand and the ulnar fingers.
Paraesthesia in the ulnar fingers