Ulnar nerve compression at the elbow caused by a prominent medial head of the triceps and an anconeus epitrochlearis muscle.
A number of musculo-tendinous variations around the medial epicondyle have been alleged to cause ulnar nerve compression. Subluxation of the ulnar nerve, a "snapping" separate medial head of triceps, a prominent medial head of triceps covering the ulnar nerve, anconeus epitrochlearis, Osborne's band, and the ligament of Struthers have been implicated. We present a case of clearcut compression of the ulnar nerve at two levels just at and posterior to the epicondyle by a tightly applied prominent head of the triceps, and at a more distal level beneath an anconeus epitrochlearis muscle.
O'Hara
J J
JJ
Torrance Memorial Medical Center, California, USA.
Stone
J H
JH
D000328:Adult; D004550:Elbow; D005260:Female; D006801:Humans; D018482:Muscle, Skeletal / Q000002:abnormalities*; D017769:Ulnar Nerve Compression Syndromes / Q000209:etiology* / Q000601:surgery