高吻合度股胫关节面人工膝关节假体的磨损  

Wear Simulation of Tibiofemoral Joint Surface of Total Knee Prosthesis with High Conformity

作　　者：丁文宇 马淑芹 周星辰 杨玉婧 孙艳[1,2,3] 赵峰[1,2] 樊瑜波[1,2,5] DING Wenyu;MA Shuqin;ZHOU Xingchen;YANG Yujing;SUN Yan;ZHAO Feng;FAN Yubo(Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China;Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing 102402, China;State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing 100190, China;Beijing AKEC Medical Co., Ltd., Beijing 102200, China;Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability, National Research Center for Rehabilitation Technical Aids, Beijing 100176, China)

机构地区：[1]北京航空航天大学生物与医学工程学院,生物力学与力生物学教育部重点实验室,北京100083 [2]北京航空航天大学北京高精尖生物医学工程创新中心,北京102402 [3]中国科学院传感器技术国家实验室,北京100190 [4]北京爱康宜城医疗器材股份有限公司,北京102200 [5]国家康复辅具研究中心老年功能障碍康复辅助技术北京市重点实验室,北京100176

出　　处：《医用生物力学》2018年第3期193-199,共7页Journal of Medical Biomechanics

基　　金：国家自然科学基金项目(11072021,31200725,31470942,31670982);国家科技支撑计划(2012BAI22B02);传感器技术国家重点实验室开放基金(NSFC31470942)

摘　　要：目的探讨人工膝关节假体股胫关节面高吻合度对假体运动和衬垫磨损的影响。方法设计和制作一款冠状面高吻合度膝关节假体,并用体外磨损实验和有限元模拟相结合的方法研究该假体衬垫的磨损。结果体外试验和有限元模拟所得的衬垫质量磨损率分别为（14.29±3.19）mg/MC和14.67 mg/MC（million cycle,MC,百万次循环）。5 MC后,体外试验和有限元模拟得到的衬垫磨损区域大致吻合,在中部区域会出现较为严重的磨损。结论有限元模拟与体外试验结果较为一致,股胫关节面冠状面高吻合度假体的磨损率较低。研究结果对高吻合度人工膝关节假体的磨损评估及临床应用具有实际意义。Objective To investigate the effect of the tibiofemoral joint surface with high conformity on total knee prosthesis motion and insert wear. Methods A type of knee prosthesis with a high coronal conformity was designed and manufactured,and its insert wear was studied by in vitro wear testing combined with finite element simulation. Results The mass wear rates calculated by the in vitro wear testing and finite element simulation were（ 14. 29 ± 3. 19） mg/MC and 14. 67 mg/MC（ MC,million cycle）,respectively. After five MCs,the areas of the insert wear obtained by both the methods were basically consistent,and severe wear was found to occur in the middle part of the insert. Conclusions The result of the finite element simulation coincided with that of the in vitro testing. The wear rate of the tibiofemoral joint surface of the total knee prosthesis with a high coronal conformity was relatively low. The research outcomes have practical significance for the evaluation and clinical application of the total knee prosthesis with a high conformity.

关 键 词：全膝关节置换 高吻合度 体外磨损实验 有限元分析 

分 类 号：R318.01[医药卫生—生物医学工程]