Fig. 4
A 46-year-old man had type II odontoid fracture caused by traffic accident. a Preoperative computed tomography (CT) showed fracture line was located at the bottom of odontoid (arrow). b Lateral radiograph obtained on the 1st day after the surgery showed the position of C1 lateral mass–C2 pedicle screws and the autogenous bone block. c, d Dynamic lateral radiographs showed bone fusion in the 3rd month postoperatively