title: Answer please. Os odontoideum.
authors.affiliation: Department of Orthopedic Surgery and Rehabilitation, Hahnemann University, Philadelphia, Pa. 19102-1192.
authors.forename: R
authors.initials: R
authors.lastname: Zamarin
authors.forename: S J
authors.initials: SJ
authors.lastname: Bosacco
mesh_terms: D000328:Adult; D001368:Axis, Cervical Vertebra / Q000002:abnormalities*; D005260:Female; D006801:Humans; D009809:Odontoid Process / Q000002:abnormalities*; D010146:Pain / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000209:etiology; D011859:Radiography