title: Os odontoideum removed by a transoral approach.
abstract: A case of atlanto-axial dislocation secondary to the presence of an "Os Odontoideum" is reported in which there was no history or evidence of trauma before the onset of symptoms. The treatment of this unusual clinical condition is discussed.
mesh_terms: D001368:Axis, Cervical Vertebra / Q000601:surgery*; D016025:Bone Transplantation; D002574:Cervical Vertebrae; D006801:Humans; D007085:Ilium; D004204:Joint Dislocations / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008722:Methods; D008875:Middle Aged; D009055:Mouth; D011859:Radiography; D013122:Spinal Diseases / Q000000981:diagnostic imaging / Q000601:surgery*; D013131:Spine / Q000000981:diagnostic imaging; D014182:Transplantation, Autologous