Wear Simulation of Tibiofemoral Joint Surface of Total Knee Prosthesis with High Conformity
10.16156/j.1004-7220.2018.03.01
- VernacularTitle:高吻合度股胫关节面人工膝关节假体的磨损
- Author:
Wenyu DING
1
;
Shuqin MA
2
;
Xingchen ZHOU
3
;
Yujing YANG
3
;
Yan SUN
1
;
Feng ZHAO
3
;
Yubo FAN
4
Author Information
1. Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education, School of Biological Science and Medical Engineering, Beihang University；Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University；State Key Laboratory of Transducer Technology, Chinese Academy of Sciences
2. Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education, School of Biological Science and Medical Engineering, Beihang University；Beijing AKEC Medical Co., Ltd.
3. Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education, School of Biological Science and Medical Engineering, Beihang University；Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University
4. Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education, School of Biological Science and Medical Engineering, Beihang University；Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University； Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability, National Research Center for Rehabilitation Technical Aids
- Publication Type:Journal Article
- Keywords:
total knee replacement;
high conformity;
in vitro wear testing;
finite element analysis
- From:
Journal of Medical Biomechanics
2018;33(3):E193-E199
- CountryChina
- Language:Chinese
-
Abstract:
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. ResultsThe 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. ConclusionsThe 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.
