生物骨科材料与临床研究2018，Vol.15Issue(1)：5-7,后插2,4.DOI:10.3969/j.issn.1672-5972.2018.01.002
跟骨内翻畸形对踝关节应力变化三维有限元分析
A three-dimensional finite element analysis of ankle joint stress with calcaneal varus angle change
摘要
Abstract
Objective To investigate the impact of various calcaneal varus angle on ankle joint stress under normal load with three-dimensional finite element analysis.Methods CT radiographs of ankle joint from a 28-year healthy volunteers were obtained while having the subject stand on one foot.A three-dimensional ankle model with different calcaneal varus angle changes (including+4°,+8°,+11°,and+14°),non-linear surrounding structure,and interfaceswasestablished using Abaqus6 v 6.14 software.Stress of ankle joint under a load of 600 N at different calcaneai varus angles were measured.Results The stress concentering regions in ankle are medial malleolus and its corresponding concave surface of talus.The point of talus in contacting with medial malleolar facet is the area where stress is the most significant,followed by lateral surface.The findings are consistent across alterations of calcaneal varus angle.Conclusion Calcaneal varus induced stress is located at area where medial malleolus and talus meet.It is positively correlated with the calcaneal varus angle.The calcaneal varus angle following operative treatment ofcalcaneal fractures should be controlled within +2°.关键词
跟骨内翻畸形/生物力学/踝关节/有限元分析Key words
Calcaneal varus deformity/Biomechanics/Ankle joint/Finite element analysis分类
医药卫生引用本文复制引用
沈超,娄玉建,王秀会..跟骨内翻畸形对踝关节应力变化三维有限元分析[J].生物骨科材料与临床研究,2018,15(1):5-7,后插2,4.基金项目
上海市浦东新区科技发展基金(PKG2016-Y10) （PKG2016-Y10）
