Numerical modeling of the damaged cement orthopedic in three variants of total hip prostheses

• Published in: Structural engineering and mechanics pp. 251 - 262
• Main Authors: Cherfi Mohamed, Zagane Mohammed El Sallah, Moulgada Abdelmadjid, Ait Kaci Djafar, Benouis Ali, Zahi Rachid, Sahli Abderahmen
• Format: Journal Article
• Language: English
• Published: 국제구조공학회 10-08-2024
• Subjects: 토목공학
• ISSN: 1225-4568
• DOI: 10.12989/sem.2024.91.3.251

Numerical modeling using the finite element method (FEM) offers crucial insights into the mechanical behavior of prostheses, including stress and strain distribution, load transfer, and stress intensity factors. Analyzing cracking in PMMA surgical cement (polymethylmethacrylate) for total hip prostheses (THP) is essential for understanding the loosening phenomenon, as the rupture of orthopedic cement is a primary cause. By understanding various failure mechanisms, significant advancements in cemented total prostheses can be achieved. This study performed a numerical analysis using a 3D FEM model to evaluate stress levels in different THP models, aiming to model damage in the orthopedic cement used in total hip arthroplasty. Utilizing ABAQUS software, FEM, and XFEM, the damage in three types of THPs-Charnley (CMK3), Osteal (BM3), and THOMPSON was modeled under stumbling loading conditions. XFEM allowed for the consideration of crack propagation between the cement and bone, while the GEARING criterion employed a user-defined field subroutine to model damage parameters. The study’s findings can contribute to improving implant fixation techniques and preventing postoperative complications in orthopedic surgery. KCI Citation Count: 0