Both Column Fixation Corridor in Pelvic Surgery

Pelvic CT data will be collected from 400 healthy adults, including 200 males and 200 females. The Synapse software will be utilized to simulate the placement of both anterior and posterior Both Column Screws (BCS) in the Both Column Fixation Corridor (BCFC). Screws will be virtually implanted into the BCFC using the "Ozturk Procedure," a technique developed based on clinical practice. Measurements will include the thickness and length of each BCS for both anterior (aBCS) and posterior (pBCS) placements, as well as the distances from the screw centers to the spina iliaca anterior superior (SIAS). Additionally, the necessary caudo-cranial (CCT) and centro-lateral tilts (CLT) for achieving axial fluoroscopic visualization of the BCFC will be measured.