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Computational and Mathematical Methods in Medicine
Volume 2015 (2015), Article ID 370631, 10 pages
http://dx.doi.org/10.1155/2015/370631
Research Article

Biomechanical Analysis of the Fixation System for T-Shaped Acetabular Fracture

1Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, 79 Yingze West Street, Taiyuan 030024, China
2Bioengineering Center, Wayne State University, Detroit, MI 48201, USA
3Department of Orthopedics, Wuhan General Hospital of Guangzhou Command, 627 Wuluo Road, Wuhan 430070, China

Received 14 February 2015; Accepted 24 May 2015

Academic Editor: Clifford C. Chou

Copyright © 2015 Yanping Fan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study aims to evaluate the biomechanical mechanism of fixation systems in the most frequent T-shaped acetabular fracture using finite element method. The treatment of acetabular fractures was based on extensive clinical experience. Three commonly accepted rigid fixation methods (double column reconstruction plates (P × 2), anterior column plate combined with posterior column screws (P + PS), and anterior column plate combined with quadrilateral area screws (P + QS)) were chosen for evaluation. On the basis of the finite element model, the biomechanics of these fixation systems were assessed through effective stiffness levels, stress distributions, force transfers, and displacements along the fracture lines. All three fixation systems can be used to obtain effective functional outcomes. The third fixation system (P + QS) was the optimal method for T-shaped acetabular fracture. This fixation system may reduce many of the risks and limitations associated with other fixation systems.