下胫腓联合新型微动弹性植入物背伸位力学分析  

Mechanics Analysis on Novel Micro-Movement Elastic Implant of Distal Tibiofibular Syndesmosis in Dorsiflexion Position

作　　者：梁成 李春艳[4] 张瀚文 薛建强 段可 王冠 鲁晓波 LIANG Cheng;LI Chunyan;ZHANG Hanwen;XUE Jianqiang;DUAN Ke;WANG Guan;LU Xiaobo(Department of Bone and Joint Surgery,the Affiliated Hospital of Southwest Medical University,Luzhou 646000,Sichuan,China;Clinical Medicine Research Center,the Affiliated Hospital of Southwest Medical University,Luzhou 646000,Sichuan,China;Sichuan Provincial Laboratory of Orthopaedic Engineering,Luzhou 646000,Sichuan,China;Department of General Pediatrics,Luzhou People’s Hospital,Luzhou 646000,Sichuan,China)

机构地区：[1]西南医科大学附属医院骨与关节外科,四川泸州646000 [2]西南医科大学附属医院临床医学研究中心,四川泸州646000 [3]四川省骨科置入器械研发及应用技术工程实验室,四川泸州646000 [4]泸州市人民医院普儿科,四川泸州646000

出　　处：《医用生物力学》2022年第2期256-261,共6页Journal of Medical Biomechanics

基　　金：泸州-西南医科大合作项目(2020LZXNYDF02);泸县-西南医科大合作项目(2020LXXNYKD-01);西南医科大学课题(2019ZQN051)。

摘　　要：目的研究下胫腓联合新型微动弹性植入物背伸位的力学性能。方法采用仿真和实验结合的方式。利用Mimics和CT数据建立踝关节背伸位正常模型、骨钉修复模型和微动弹性植入物修复模型,并用ANSYS Workbench进行有限元分析。采用Instron E10000力学实验机对下肢标本进行力学实验,分别测5组实验数据并分析。结果背伸位微动弹性植入物修复和正常模型的各项力学性能都更接近,但微动弹性植入物的应力大于骨钉应力。双尾分布的双样本异方差t检验结果表明,微动弹性修复模型和正常模型的反抗扭矩无显著性差异。结论对背伸位,下胫腓联合微动弹性植入物修复力学性能优于骨钉修复;微动弹性植入物还有优化空间。Objective To study mechanical properties of the novel micro-movement elastic implant of distal tibiofibular syndesmosis in dorsiflexion position.Methods A combination of simulation and experiment was used.The normal ankle dorsiflexion model,the bone nail repaired model and the micro-movement elastic implant repaired model were established by using Mimics and CT data.Besides,ANSYS Workbench was used for finite element analysis.Mechanical experiments on lower limb specimens were conducted on Instron E10000 mechanical test instrument,and five sets of experimental data were measured and analyzed.Results Mechanical properties of the micro-movement elastic implant repaired model were closer to those of the normal ankle dorsiflexion model,but stress of the micro-movement elastic implant repaired mode was greater than that of the bone nail repaired model.The results of two-sample heteroscedasticity t test indicated that there was no significant difference in resistance torque between the micro-movement elastic implant repaired model and the normal ankle dorsiflexion model.Conclusions For dorsiflexion position,repairing mechanical properties of the novel micro-movement elastic implant are much better than those of the bone nail,and there is still room for optimizing the micro-movement elastic implant.

关 键 词：下胫腓联合 背伸 弹性植入物 

分 类 号：R318.01[医药卫生—生物医学工程]