Fig. 4From: A useful intraoperative technique for transiliac-transsacral screws: a point-to-point coaxial guide apparatusEnsuring the position of the screw by the inlet, outlet and lateral views again, and taking an over-the-top view to assess screw length and far cortex penetration of the iliac (a–d). As shown in the radiographs and CT scans, the position of the transiliac-transsacral screw was satisfied except for the threads protruding through the contralateral ilium (e–j)Back to article page