title: Os trigonum syndrome.
abstract: The os trigonum is a frequently encountered accessory bone of the foot. It is located at the posterior aspect of the talus, and may appear either as a separate ossicle or fused to the talus. The separate ossicle may represent an accessory bone or a fracture of the posterior process (also called the trigonal process) of the talus. The author reviews the mechanism of injury and the diagnosis and treatment. A case report of a fracture of the trigonal process is presented.
authors.affiliation: E.B. USAF Strategic Hospital (SAC), Offutt AFB, NE 68128.
authors.forename: J A
authors.initials: JA
authors.lastname: Wenig
mesh_terms: D000328:Adult; D050723:Fractures, Bone / Q000175:diagnosis / Q000209:etiology / Q000601:surgery; D006801:Humans; D008297:Male; D011859:Radiography; D013577:Syndrome; D013628:Talus / Q000000981:diagnostic imaging / Q000293:injuries* / Q000601:surgery