Investigation into the analysis method for assessing contact stress in joint prosthesis

作     者：Weiling Cui Xushu Zhang Weiyi Chen Ji Qiu 

作者机构：College of Biomedical EngineeringTaiyuan University of TechnologyTaiyuan030024China College of Aeronautics and AstronauticsTaiyuan University of TechnologyTaiyuan030024China 

出 版 物：《Medicine in Novel Technology and Devices》 (医学中新技术与新装备（英文）)

年 卷 期：2024年第22卷第2期

页      面：51-58页

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Grant numbers 12102287,12302477,11972243) the Fundamental Research Program of Shanxi Province(Grant number 202203021222081) 

主　　题：Contact stress Joint prosthesis Hertz contact Finite element model 

摘      要：Contact stress is the important cause of wear and failure of knee joint prostheses implanted in the human body during *** calculation of contact stress on joint prostheses is often inaccurate due to the deviation of joint position during *** paper proposes a correction method for contact stress based on finite element ***,the contact stress and contact radius between femoral and tibial prostheses of knee joint were calculated and analyzed by Hertz contact ***,individualized finite element models based on the individualized geometry of the joint prosthesis and individualized loading were constructed,and the finite element contact stress was *** finite element results were calibrated utilizing the Hertz contact ***tionally,this study investigated the impact of three gait patterns(normal gait,medial thrust gait,and bouncing gait)on the contact stress experienced by the tibial *** research methods and results can provide ideas for theoretical analysis and finite element simulation of prosthetic joint contact,as well as offer theoretical support and analysis methods for evaluating the lifespan of prosthetic joints.