title: Ulnar nerve compression at the elbow caused by a prominent medial head of the triceps and an anconeus epitrochlearis muscle.
abstract: 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.
authors.affiliation: Torrance Memorial Medical Center, California, USA.
authors.forename: J J
authors.initials: JJ
authors.lastname: O'Hara
authors.forename: J H
authors.initials: JH
authors.lastname: Stone
mesh_terms: D000328:Adult; D004550:Elbow; D005260:Female; D006801:Humans; D018482:Muscle, Skeletal / Q000002:abnormalities*; D017769:Ulnar Nerve Compression Syndromes / Q000209:etiology* / Q000601:surgery