Evaluation of finite element modeling methods for predicting compression screw failure in a custom pelvic implant.

ABSTRACT: Introduction: Three-dimensional (3D)-printed custom pelvic implants have become a clinically viable option for patients undergoing pelvic cancer surgery with resection of the hip joint. However, increased clinical utilization has also necessitated improved implant durability, especially with regard to the compression screws used to secure the implant to remaining pelvic bone. This study evaluated six different finite element (FE) screw modeling methods for predicting compression screw pullout and fatigue failure in a custom pelvic implant secured to bone using nine compression screws. Methods: Three modeling methods (tied constraints (TIE), bolt load with constant force (BL-CF), and bolt load with constant length (BL-CL)) generated screw axial forces using functionality built

SUBMITTER: Zhu Y 

PROVIDER: S-EPMC11372789 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature