重建钢板前置和上置固定锁骨中段斜形骨折的有限元分析

Abstract

Abstract:

Objective　To explore and compare the biomechanical properties of midshaft, oblique clavicle fractures fixed with reconstruction plates in anterior and posterior placement using finite element(FE) analysis, and therefore to provide theoretic reference for clinic application.　Methods　3D FE model of the midshaft, oblique clavicle fractures fixed with reconstruction plates in anterior and posterior placement was developed. Each mode was tested in axial compression, bending, internal, and external torsion. The different position fixations were compared for von Mises distribution, and the von Mises distribution of the fracture surface contact pressure, maximum comprehensive displacement were also compared.　Results　The evaluation index data showed no difference between plate fixation in anterior and superior placement under compression loading; under the bending, internal, and external torsion loading, the maximum stress of the anterior plate placement was significantly greater than that of the superior plate placement, but the fracture fragments displacement and the maximum stress on the fracture fragments showed no difference.　Conclusions　For the midshaft, oblique clavicle fractures, reconstruction plates in anterior placement is more prone to stress concentration than places in superior placment, suggesting that the biomechanical stability of the plates in superior placement is superior to that in anterior placement.

Key words: Clavicle, Fractures, Finite element analysis, Reconstruction plates

CLC Number:

SHU Chang-Rong, ZHANG Ying, GUO Xiao-Ze, XIAO Jin, JIA Hu-Ge. Finite element analysis of midshaft, oblique clavicle, fractures fixed with reconstruction plates in anterior and posterior placement[J]. Chinese Journal Of Clinical Anatomy, 2013, 31(1): 104-107.

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Finite element analysis of midshaft, oblique clavicle, fractures fixed with reconstruction plates in anterior and posterior placement

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