Clinical Research Directory

3D-Printed Pelvic Models for Planning Complex Total Hip Arthroplasty

Total hip arthroplasty (THA) in patients with complex acetabular anatomy can be challenging because of abnormal bone structure, deformity, or bone loss. Accurate preoperative planning is important for selecting the appropriate acetabular component, determining its position, and achieving stable fixation. This prospective study aims to evaluate whether patient-specific, CT-based three-dimensional (3D)-printed pelvic models improve preoperative planning in complex total hip arthroplasty compared with conventional radiographic and CT-based planning. Patients undergoing complex primary or revision THA at Ain Shams University Hospitals will be included. For each patient, two preoperative plans will be prepared. Plan A will use conventional radiographs and CT images, while Plan B will additionally use a life-size 3D-printed pelvic model for surgical planning and simulation. Both plans will be compared with the actual acetabular component size and orientation achieved during surgery. The study will also evaluate changes in surgical planning, restoration of the hip center, operative parameters, postoperative complications, functional outcomes, and the practical feasibility of 3D printing. Patients will undergo postoperative follow-up for six months. The study seeks to determine the additional value of 3D-printed pelvic models in improving planning accuracy and supporting surgical decision-making in complex hip replacement.