INBONEⅡ和INFINITY型人工踝关节的生物力学特征分析  

Analysis on Biomechanical Characteristics of INBONEⅡand INFINITY Artificial Ankle Joints

作　　者：王闯 张小刚 张延伟 靳忠民 WANG Chuang;ZHANG Xiaogang;ZHANG Yanwei;JIN Zhongmin(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China;Department of Orthopedics,Qilu Hospital of Shandong University,Ji’nan 250012,China;School of Medical Integration and Practice Center,Shandong University,Ji’nan 250012,China)

机构地区：[1]西南交通大学机械工程学院,成都610031 [2]山东大学齐鲁医院骨科,济南250012 [3]山东大学医学融合与实践中心,济南250012

出　　处：《医用生物力学》2024年第5期873-880,共8页Journal of Medical Biomechanics

基　　金：国家自然科学基金项目(52035012)。

摘　　要：目的评估人工踝关节INBONEⅡ和INFINITY全踝关节置换术(total ankle arthroplasty,TAA)后生物力学特征差异,为患者提供更加科学和个体化的治疗选择。方法基于骨肌(musculoskeletal,MSK)多体动力学(multibody dynamics,MBD)软件AnyBody,建立患者个体化TAA下肢MSK MBD模型。预测踝关节接触力、踝关节运动和人工踝关节关节面接触特征。结果人工踝关节关节面几何形状对踝关节接触力没有显著影响,但会对活动度和关节面接触特征造成影响。相比于INBONEⅡ,INFINITY冠状面关节面弧高较低,内翻-外翻和外旋-内旋运动分别增加7.91%和2.61%;矢状面匹配度较低,后移-前移和下移-上移运动分别减小21.75%和21.23%,内移-外移运动增加49.26%;INFINITY匹配度较低,内侧、外侧和总关节面接触面积分别减少18.48%、30.42%和26.36%,但接触压力中心运动轨迹集中在距骨组件边缘内侧,避免边缘接触应力集中,降低关节脱位和胫骨衬垫过早磨损的风险。结论INFINITY型人工踝关节更小的几何限制,表现出更好的生物力学性能,更有利于恢复术后踝关节运动功能。Objective To assess the biomechanical differences between the artificial ankle joints INBONEⅡand INFINITY after total ankle arthroplasty(TAA)to provide more scientific and individualized treatment options for patients.Methods A patient-individualized TAA lower extremity MSK MBD model was established using the musculoskeletal(MSK)multibody dynamics(MBD)software AnyBody.The ankle joint contact force,motion,and contact characteristics of artificial ankle joint surfaces were predicted.Results The geometric shape of the articular surface of the artificial ankle had no significant effect on the ankle contact force,but it affected the range of motion and contact characteristics of the articular surface.Compared with INBONEⅡ,the coronal plane articular surface arc height of INFINITY was lower,and increased the inversion-eversion and external rotation-internal rotation movements by 7.91%and 2.61%,respectively.Sagittal plane matching was lower,and reduced posterior-anterior and inferior-superior movements by 21.75%and 21.23%,respectively,and medial-lateral movement increased by 49.26%.INFINITY exhibited lower matching with decreases of 18.48%,30.42%,and 26.36%in the medial,lateral,and total joint surface contact areas,respectively.However,the center of the pressure motion trajectory was concentrated on the medial side,while avoiding edge contact stress concentration and reducing the risk of joint dislocation and premature wear of the tibial component.Conclusions The smaller geometric constraints of the INFINITY artificial ankle joint demonstrated better biomechanical performance,thereby promoting improved postoperative ankle joint functional recovery.

关 键 词：人工踝关节 全踝关节置换 骨肌多体动力学 生物力学特征 

分 类 号：R318.01[医药卫生—生物医学工程]