The os supratrochleare dorsale: a normal variant that may cause symptoms.
Four patients with an os supratrochleare dorsale are presented; three had symptoms that necessitated surgical removal. One patient showed the abnormality in both elbows; three were men and one was a woman. The os supratrochleare dorsale is most likely an accessory bone; however; the location is such that it often becomes traumatized by the olecranon. Posttraumatic pathologic changes with secondary chondrometaplasia of the bone itself occurs as a consequence. Symptomatic patients show posttraumatic changes of the bone, while those without symptoms show a normal trabecular pattern. This condition seems to bear no relation to the supratrochlear septum or to bones in the coronoid fossa.
D000293:Adolescent; D000328:Adult; D002357:Cartilage Diseases / Q000000981:diagnostic imaging / Q000209:etiology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007594:Joint Loose Bodies / Q000000981:diagnostic imaging; D008297:Male; D010003:Osteoarthritis / Q000000981:diagnostic imaging / Q000209:etiology; D011859:Radiography; D014457:Ulna / Q000000981:diagnostic imaging* / Q000293:injuries