Fig. 1
From: Preoperative CT simulation of iliosacral screws for treating unstable posterior pelvic ring injury
a Simulated three-dimensional lateral view reconstruction of the sacrum (Lateral view, L) based on the patient's preoperative CT data; b Inlet View (I); c Outlet View (O); d The sacral 1 vertebral body was planned into 9 regions based on the standard lateral sacral image; e The upper endplate of the sacral 1 vertebral body was divided into 9 regions based on the pelvic inlet image; f The anterior surface of sacral 1 vertebral body was divided into 9 regions based on the pelvic outlet view, with the medial edge of bilateral sacral 1 anterior foramen as the parallel tangent line of the middle sagittal line and the upper edge of bilateral sacral 1 anterior foramen as the parallel tangent line with the horizontal line; g Simulated standard lateral X-ray images of the sacrum; h Simulated standard inlet; I Simulated standard outlet X-ray image