The Wear on a Novel Motion Mode Hinged Knee Prosthesis: A Finite Element Analysis
10.16156/j.1004-7220.2023.01.14
- VernacularTitle:新型运动模式铰链膝关节假体磨损有限元分析
- Author:
Lingyue KONG
1
;
Jing ZHANG
2
;
Dongmu TIAN
3
;
Jingyu ZHANG
4
;
Yongcheng HU
4
Author Information
1. Sports Medicine Center, the Second Affiliated Hospital of Inner Mongolia Medical University
2. School of Construction Machinery, Chang′ an University
3. Beijing Weigao Yahua Artificial Joint Development Company
4. Department of Bone and Soft Tissue Oncology, Tianjin Hospital
- Publication Type:Journal Article
- Keywords:
hinged knee prosthesis;
prosthesis design;
wear;
finite element analysis
- From:
Journal of Medical Biomechanics
2023;38(1):E097-E103
- CountryChina
- Language:Chinese
-
Abstract:
Objective To perform finite element analysis on a novel motion mode hinged knee prosthesis, and investigate the method of wear simulation on hinged prosthesis and the influence of motion mode on wear of the prosthesis. Methods Based on the finite element model of contact stress on spherical axis prosthesis, the finite element model of wear was established according to Archard wear theory. The kinematics data during different motions were input as loading condition to simulate mechanical environment of the knee arthroplasty in physiological activities. The wear results of spherical axis prosthesis were studied. Results For tibial insert, the average and maximum contact stresses during upstairs and downstairs climbing were higher than those during walking, and the cumulative wear volume during upstairs climbing was larger than that during downstairs climbing and walking. The wear mainly occurred on lower surface of tibial insert during all 3 motions. For rotating bushing, there was only a short period of contact and wear during walking, and the cumulative wear was 0. 19 mm3. Conclusions The spherical axis motion of hinged knee prosthesis can improve the mechanical environment of knee, reduce the wear of rotating bushing, and prolong the prosthesis survival. The finite element simulation can predict the wear of hinged prosthesis effectively, and provide the theoretical basis for design and improvement of the prosthesis.
