Comparative Finite Element Analysis of Fixation Techniques for APC II Open-Book Injuries of the Pelvis

Open-book fractures are defined as the separation of pubic symphysis or rami and disruption anterior sacroiliac, sacrotuberous, sacrospinal ligaments. They can be stabilized by fixation arch. However, indications advantages additional placement iliosacral screws remain unknown. A CT-based model healthy pelvis was created ligaments were modeled tension springs. Range motion sacroiliac joint symphysis, bone implant stresses compared for physiological model, symphyseal plating alone, posterior using two screws. The range reduced alone further decrease noted with fixation. Von Mises acting on plate 819.7 MPa only 711.56 equivalent a safety factor 1.1 1.26, respectively. Implant highest parasymphyseal. While exhibited more homogeneous distribution in fixation, pure resulted bending at pelvic rami. analysis does not indicate superiority either In both cases, is permanently limited, which should taken into account regard to removal flexible techniques stabilization joint.