Three dimensional finite element modeling of clavicle and the related biomechanics analysis
10.3724/SP.J.1008.2008.01316
- Author:
Zhi-Yong YANG
1
Author Information
1. Department of Orthopaedics
- Publication Type:Journal Article
- Keywords:
Biomechanics;
Clavicle;
Finite element analysis
- From:
Academic Journal of Second Military Medical University
2010;29(11):1316-1319
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To establish a three dimensional finite element model of normal clavicle and calculate the stress and strain distribution on the clavicle under the axial load,so as to provide a numerical model for analysis of biomechanical behaviors. Methods: The right clavicle of a healthy normal male was scanned by CT and serial sections were obtained. Then the CT images were fed into the Simpleware and ANSYS software to create the model through a serial steps including meshing, assigning the material attribution,restricting the freedom and simulating axial loading. The result of stress distribution and response of the model was obtained. Results: The established model had 62 182 nodes and 40 878 tetrahedral units. The stress mainly concentrated within the middle 1/3 part of the clavicle under axial loading,and the stress on the inferior surface was obviously higher than that on the superior surface. Conclusion: The stress distribution analysis explains the reason why the middle 1/3 region of clavicle is prone to fracture. The stress mainly focuses on the inferior surface and the bending movement leading to clavicle fracture is located on the coronal plane,indicating that placement of plate in the superior surface can effectively balance the bending movement and avoid fixation failure during internal fixation of middle segment clavicle fracture. In a word, finite element analysis can be used to effectively investigate the biomechanic characteristics of clavicle.
