Fig. 1From: Comparative study between open lumbopelvic fixation and percutaneous iliosacral fixation for management of sacral fracturesLateral fluoroscopic view of sacrum in prone position: to confirm starting entry point (A). True lateral view was ensured when two sciatic notches overlap with each other and end plates of S1 vertebra were also overlapped. Iliac cortical density (ICD) needed to be well defined for secure entry point for iliosacral screw fixation (B)Back to article page