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Journal of Healthcare Engineering
Volume 2017 (2017), Article ID 8590251, 10 pages
https://doi.org/10.1155/2017/8590251
Research Article

Biomechanical Property of a Newly Designed Assembly Locking Compression Plate: Three-Dimensional Finite Element Analysis

1Department of Orthopedics, The 184th Hospital of PLA, Spinal Surgery Treatment Center of Nanjing Military Region, Yingtan, Jiangxi Province 335000, China
2Department of Orthopedics, General Hospital of Chengdu Command, Chengdu, Sichuan Province 610083, China
3Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, Tianjin University of Technology, Tianjin 300384, China

Correspondence should be addressed to Cheng-Fei Du; moc.liamtoh@13bffccdd

Received 24 February 2017; Accepted 3 May 2017; Published 18 June 2017

Academic Editor: Wenxin Niu

Copyright © 2017 Jiang-Jun Zhou 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

In this study, we developed and validated a refined three-dimensional finite element model of middle femoral comminuted fracture to compare the biomechanical stability after two kinds of plate fixation: a newly designed assembly locking compression plate (NALCP) and a locking compression plate (LCP). CT data of a male volunteer was converted to middle femoral comminuted fracture finite element analysis model. The fracture was fixated by NALCP and LCP. Stress distributions were observed. Under slow walking load and torsion load, the stress distribution tendency of the two plates was roughly uniform. The anterolateral femur was the tension stress area, and the bone block shifted toward the anterolateral femur. Maximum stress was found on the lateral border of the number 5 countersink of the plate. Under a slow walking load, the NALCP maximum stress was 2.160e+03 MPa and the LCP was 8.561e+02 MPa. Under torsion load, the NALCP maximum stress was 2.260e+03 MPa and the LCP was 6.813e+02 MPa. Based on those results of finite element analysis, the NALCP can provide adequate mechanical stability for comminuted fractures, which would help fixate the bone block and promote bone healing.