Passage of an Anterior Odontoid Screw through Gastrointestinal Tract

Figure 1

(a) Preoperative computed tomography (CT) of the odontoid fracture, sagittal view (left). Intraoperative view on odontoid screw placement, lateral view (right). (b) X-ray imaging disclosed a five-millimeter dorsal migration of the odontoid process three weeks after the operation, lateral view.