中国组织工程研究2018，Vol.22Issue(3)：392-397,6.DOI:10.3969/j.issn.2095-4344.0036
三维有限元分析钢板踝关节融合后的力学稳定性
Mechanical stability after plating ankle arthrodesis based on three-dimensional finite element analysis
谢强 1王智慧 1刘文一 1高云峰 1薛鑫鑫1
作者信息
- 1. 承德医学院附属医院骨外五科,河北省承德市 067000
- 折叠
摘要
Abstract
BACKGROUND: Plating ankle arthrodesis includes anterior and lateral plating methods, but there is some lack of knowledge about their differences in biomechanics. OBJECTIVE: To establish the three-dimensional models of anterior and lateral plating ankle arthrodesis through three-dimensional finite element technique, simulate human gait, and to analyze its biomechanical stability and safety. METHODS: The geometrical morphology of ankle joint was reconstructed based on the normal human ankle CT data. The models of anterior and lateral plating ankle arthrodesis were established using finite element analysis software Abaqus 2016, and the biomechanical changes after exerting stress at the positions of intorsion,extorsion, dorsiflexion, and neutral were analyzed. RESULTS AND CONCLUSION: (1) The maximal displacement and stress distribution under different stress were compared between two models by three-dimensional element analysis, and there was no significant difference in the stability between two models. (2) The abilities of resistance to intorsion and dorsiflexion stresses of the lateral plating model were slightly better than those of the anterior plating model, but the resistance to extorsion stress of the lateral plating model was lower than that of the anterior plating model; the stress peak both concentrated on the plate-screw connections. (3) The plate, screw and bone mass of the anterior plating model showed the maximum stress peak under intorsion stress, and broken plates and nails usually occur. (4) The lateral plating presented with peak stress under extorsion stress.关键词
骨科植入物/数字化骨科/踝关节炎/踝关节融合/三维有限元/钢板/螺钉/生物力学分类
医药卫生引用本文复制引用
谢强,王智慧,刘文一,高云峰,薛鑫鑫..三维有限元分析钢板踝关节融合后的力学稳定性[J].中国组织工程研究,2018,22(3):392-397,6.
