Park JY, Kwon HM, Lee WS, et al. - This study was intended to collect anthropometric data about the safe zone for the placement of transacetabular screws by analyzing the three-dimensional (3D) reconstruction model and ascertain the safe length of transacetabular screws by performing the 3D simulated surgery. Researchers examined 50 hips of 25 patients who had undergone lower extremity angiographic computed tomography scans retrospectively. The central angle and safe depth of the safe zone of the transacetabular screws on the 3D models were assessed. In this study, the 3D simulated surgery to confirm the safe length of screws was conducted in each hole of the customized cup implant. The outcomes of this study exhibited that the quantitative measurements obtained can help reduce the incidence of pelvic vascular injury during transacetabular screw fixation in total hip arthroplasty, although our study was limited by the use of a virtual computer program.