中国临床解剖学杂志 ›› 2023, Vol. 41 ›› Issue (2): 212-217.doi: 10.13418/j.issn.1001-165x.2023.2.16

• 临床生物力学 • 上一篇    下一篇

踝关节融合术后后足关节生物力学分析

林文杰1,    孙欣1,    黄文华1,2,    魏波1,    林涛1,    梁振明1,    钟环1,    张欣1,    欧阳汉斌1*   

  1. 1.广东医科大学附属医院骨科中心,  广东   湛江    524001;   2.南方医科大学基础医学院人体解剖学国家重点学科,  
    广东省医学生物力学重点实验室,  广东省医学3D打印应用转化工程技术研究中心,  广州    510515
  • 收稿日期:2022-01-06 出版日期:2023-03-25 发布日期:2023-04-14
  • 通讯作者: 欧阳汉斌,副主任医师,E-mail: robin85@163.com
  • 作者简介:林文杰(1995-),硕士研究生,研究方向:足踝外科、数字骨科,E-mail: 704185800@qq.com;共同第一作者:孙欣(1979-),主任医师,研究方向:数字骨科,E-mail: sunxin20088@126.com
  • 基金资助:
    广东省医学科研基金项目(B2021213);广东省科技计划项目(2018B090944002);湛江市科技发展专项资金竞争性分配项目(2020A01025);广东医科大学大学生创新实验项目(FYZY001)

Biomechanical analysis of hindfoot joint after ankle arthrodesis

Lin Wenjie1,Sun Xin1,Huang Wenhua1, 2,Wei Bo1,Lin Tao1,Liang Zhenming1,Zhong Huan1,Zhang Xin1, Ouyang Hanbin1*   

  1. 1. Department of Orthopedics Center, The Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China; 2. Guangdong Engineering Research Center for Translation of Medical 3D Printing Application, Guangdong Provincial Key Laboratory of Medical Biomechanics, National Key Discipline of Human Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
  • Received:2022-01-06 Online:2023-03-25 Published:2023-04-14

摘要: 目的    探讨踝关节融合术后后足关节的生物力学特性。  方法    利用健康成年男性志愿者右踝关节CT图像,构建踝关节融合前的三维有限元模型,在此基础上模拟踝关节融合术后骨性融合状态,采用中立、外旋、内旋、背伸和跖屈的5种载荷工况分别对融合前、后模型组进行有限元分析,评估踝关节融合前后的整体刚度变化、距下关节和距舟关节的接触力学特性变化。  结果    踝关节发生骨性融合后,整体结构刚度较融合前模型显著增高;除中立位工况以外,融合后的距下关节的接触面积均有所减少,距舟关节接触面积则有所增加;而融合后的距下和距舟关节的接触应力在各工况下总体呈降低趋势。结论    踝关节骨性融合术后相邻关节的接触特性改变可能是足部整体结构刚度提高后承载模式发生变化的结果,其与相邻后足关节退行性改变之间的关联尚有待进一步研究证实。

关键词: 踝关节创伤性关节炎,  ,  , 踝关节融合术,  ,  , 后足关节,  ,  , 有限元分析,  ,  , 生物力学 

Abstract: Objective   To investigate the biomechanical characteristics of hindfoot joint after ankle arthrodesis.    Methods   Based on the CT images of the right ankle of healthy adult male volunteers, a three-dimensional finite element model of the normal ankle was constructed. On this basis, the bony fusion after ankle arthrodesis was simulated. Five load cases of neutral, external rotation, internal rotation, dorsiflexion, and plantar flexion were used to analyze the model group before and after fusion, and to evaluate the changes of overall stiffness and the contact mechanical characteristics of subtalar joint and talonavicular joint before and after ankle arthrodesis.    Results    After ankle arthrodesis, the overall structural stiffness was significantly higher than that of the model before fusion. Except for neutral condition, the contact area of subtalar joint after fusion decreased, while the contact area of talonavicular joint increased. The contact stress of subtalar joint and talonavicular joint after fusion generally showed a downward trend under various working conditions.   Conclusions  The change of contact characteristics of adjacent joints after ankle arthrodesis may be the result of the change of bearing mode after the improvement of the overall structural stiffness of the foot, and its association with the degenerative changes of adjacent hindfoot joints needs to be confirmed by further research. 

Key words: Traumatic arthritis of ankle,  ,  , Ankle arthrodesis,  ,  , Hindfoot joint,  ,  , Finite element analysis,  ,  , Biomechanics

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