Fig. 2
From: Preoperative CT simulation of iliosacral screws for treating unstable posterior pelvic ring injury
Preoperatively, a 49-year-old male patient involved in a traffic accident was diagnosed with a pelvic fracture (Tile B2). Screw trajectory: sacrum lateral radiographs: insertion point:LC1; Inlet radiograph: screw trajectory:LC1-IC3; Outlet radiograph: screw trajectory:LC1-OB3. A Preoperative CT three-dimensional reconstruction of the patient; B Intraoperative fluoroscopic positioning screws were used to make needle points in the lateral radiographs of the sacrum; C The insertion point of the guide wire was located in the preoperative location area on the lateral radiographs of the sacrum (LC1); D The guide needle on the inlet views pointed to the area of the simulated screw exit point before surgery (IC3); E The guide needle on the outlet views pointed to the area of the simulated screw exit point before surgery (OB3); F Intraoperative inlet radiograph screw trajectory; G Intraoperative outlet radiograph screw trajectory; H Postoperative CT cross-sectional screw trajectory; I The patient can live normally three months following surgery