距腓前韧带损伤前后距骨骨软骨的有限元分析  

Finite element analysis of talus cartilage before and after anterior talofibular ligament injury

作　　者：涂浒第 居来提·买提肉孜 郑辉[2] 李超杰 Tu Hudi;Jurat·Matrozi;Zheng Hui;Li Chaojie(College of Mechanical Engineering,Xinjiang University,Urumqi 830017,Xinjiang Uygur Autonomous Region,China;The Sixth Affiliated Hospital,Xinjiang Medical University,Urumqi 830002,Xinjiang Uygur Autonomous Region,China)

机构地区：[1]新疆大学智能制造现代产业学院,新疆维吾尔自治区乌鲁木齐市830017 [2]新疆医科大学第六附属医院,新疆维吾尔自治区乌鲁木齐市830002

出　　处：《中国组织工程研究》2024年第18期2795-2799,共5页Chinese Journal of Tissue Engineering Research

基　　金：新疆维吾尔自治区自然科学基金(2019D01C245),项目负责人:郑辉。

摘　　要：背景:距腓前韧带的损伤在关节韧带损伤中最常见。运用有限元手段对踝关节运动进行仿真模拟,具有实验时间短、可模拟的复杂边界条件和力学性能等优点。目的:分析距腓前韧带对距骨滑车应力分布及踝关节稳定性的影响。方法:采集患者距腓前韧带断裂和Broström手术后2个月随访的CT和MRI数据,建立足踝有限元模型,模拟距腓前韧带损伤患者术前和术后在正常步态周期(落地相、中立相、离地相)中的踝关节受力情况,测量两者的距骨骨软骨的应力分布情况、最大应力值并分析其差异。结果与结论:正常步态下无论在哪种位相中距腓前韧带对距骨滑车都具有一定的保护作用,减少踝关节在运动过程中对距骨滑车的磨损。在3种相位中距骨滑车表面靠近踝关节内侧处均有应力集中情况。离地相时的距腓前韧带对距骨滑车的影响远大于其在落地相和中立相时的影响,在一定情况下踝关节受到的扭矩越大距腓前韧带对距骨滑车的稳定性影响作用就越明显。BACKGROUND:The injury of the anterior talofibular ligament is most common in joint ligament injuries.The use of the finite element method to simulate ankle joint motion has the advantages of short experimental time,complex boundary conditions that can be simulated,and mechanical properties.OBJECTIVE:To analyze the effect of the anterior talofibular ligament on the stress distribution of the talus trochlea and the stability of the ankle joint.METHODS:A finite element model of the ankle was established based on CT and MRI images of patients with anterior talofibular ligament injury who were followed up for two months after Broström surgery to simulate ankle joint stress in patients with anterior talofibular ligament injury before and after surgery during normal gait cycles(ground phase,neutral phase,and off-ground phase).The stress distribution and maximum stress value of the talus bone cartilage were measured before and after surgery,and their differences were analyzed.RESULTS AND CONCLUSION:Under normal gait,the anterior talofibular ligament has a certain protective effect on the talus trochlea in any position,reducing the wear of the ankle joint on the talus trochlea during movement.In all three phases,stress concentration was observed on the surface of the talus trochlea near the inner side of the ankle joint.The influence of the anterior talofibular ligament on the stability of the talus trochlear is much greater in the off-ground phase than in the ground phase and neutral phase.Under certain circumstances,the greater the torque on the ankle joint,the more significant the effect of the anterior talofibular ligament on the stability of the talus trochlea.

关 键 词：距腓前韧带 距骨软骨 生物力学 有限元分析 踝关节 

分 类 号：R496[医药卫生—康复医学] R318[医药卫生—临床医学] R681