中立位踝关节生物力学有限元仿真
收稿日期:20170612
基金项目:首都市民健康项目培育(Z131100004013034)
三作者简介:李瑜(1990 ),女,硕士研究生,研究方向为机械工程,1210833627@qq .com 三
第25卷 第4期
2017年12月
北京石油化工学院学报
Journal of Bei j in g Institute of Petrochemical Technolo gy
Vol.25 No.4Dec.2017
文章编号:1008-2565(2017)04-0051-09
中立位踝关节生物力学有限元仿真
李 瑜1,2,邓双城1,杜 程1,2
,白兰兰1,时惠平3
(1.北京石油化工学院,北京102617;2.北京化工大学,北京100029;3.空军总医院,北京100142)摘要:为了研究踝关节处于中立位时的生物力学特性,基于中立位踝关节的核磁图像,利用Mimics 二Geoma g ic
studio 分别建立了不含韧带和含韧带踝关节的三维几何实体模型,
利用有限元方法仿真踝关节处于中立位时的受力分布情况,对比分析了不含韧带和含韧带踝关节的力学特性三仿真结果表明:踝关节处于中立位状态时,最大位移位于距骨前侧,最大应变位于软骨,应力较高部位主要集中在胫骨及腓骨上端二胫骨软骨与距骨软骨接触处二距骨颈二距下关节二距骨后突等部位;含韧带踝关节与不含韧带踝关节相比,踝关节的位移二应变二应力的峰值都有所减小,且从其整体趋势看前者的分布更为均匀三
关键词:踝关节;有限元;韧带;中立位中图分类号:R318
文献标志码:A
DOI :10.12053/j .
issn.1008-2565.2017.04.010Finite Element Simulation of Biomechanics of Human Neutral Ankle Joints
LI Yu 1,2,DENG Shuan g chen g 1,DU Chen g 1,
2,BAI Lanlan 1,SHI Hui p in g 3
(1.Bei j in g Institute o f P etrochemical Technolo g y ,Bei j in g 102617,China ;2.Bei j in g Universit y o f Chemical
Technolo g y ,Bei j in g 100029,China ;3.Air Force General Hos p ital ,P LA ,Bei j in g 100142,China )
Abstract :In order to stud y the mechanical characteristics of ankle j oints in neutral p ositions.The three -dimensional g eometric model of ankle j oints is established b y usin g Mimics ,Geoma g ic and studio ,based on the MRI ima g e of neutral ankle j oints.The model is used to simulate the mechanical distribution of the ankle j oint in neutral p osition ,and ex p lore the mechanics of ankle
li g aments.Research shows that the maximum dis p lacement of the ankle j oint in neutral p osition is in the front of the talus ,and the maximum strain is at the p osition of the cartila g e.The hi g h stress p arts mainl y concentrate on the u pp er of tibia and fibula ,tibia cartila g e and talus cartila g e contact p art ,neck of the talus ,subtalar j oint ,p osterior p rocess of talus and external p rocess of talus.B y com p arin g the simulation results of the two sets of ankle j oints ,it is found out that the
maximum value of dis p lacement ,strain and stress of the ankle j oint with li g aments are smaller than the ankle j oint without li g aments ,amon g which the former is more evenl y distributed with re g ard to its overall https://www.360docs.net/doc/7d13107483.html, p ared with the p revious simulation results ,the rationalit y of the results is verified ,and the li g ament restrainin g effect on ankle j oints is also verified.Ke y words :ankle ;finite element ;li g aments ;neutral p osition 在人体所有损伤中踝关节损伤占有较大的比重,其中踝关节韧带损伤的发生率约为25%[
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