Fig. 3From: A new transpedicular lag screw fixation for treatment of unstable Hangman’s fracture: a minimum 2-year follow-up studyIntraoperative images of C-arm radiographs. a Confirm the entry point and the direction of the screw. b Insert the guide pin through the fracture line and then drill a hole by the drill bit along the direction of the guide pin. c, d Screw appropriate-sized new transpedicular lag screws on either side by passing through the drill hole and achieve firm compression and fixationBack to article page