Design and finite element analysis of experimental device for simulating interface micro motion of bone trabecular prosthesis
10.19745/j.1003-8868.2024004
- VernacularTitle:模拟骨小梁假体界面微动的实验装置设计与有限元分析
- Author:
Guang-Hui SHI
1
;
Xiao-Guang ZHANG
;
Xuan LI
;
Lin-Wei LYU
;
Chun-Qiu ZHANG
Author Information
1. 天津理工大学机械工程学院天津市先进机电系统设计与智能控制重点实验室,机电工程国家级实验教学示范中心,天津 300384
- Keywords:
trabecular prosthesis;
interface micro motion;
experimental device;
finite element analysis;
osseointegration
- From:
Chinese Medical Equipment Journal
2024;45(1):25-30
- CountryChina
- Language:Chinese
-
Abstract:
Objective To design an experimental device for simulating the interface micro motion of bone trabecular prosthesis and carry out the finite element analysis.Methods The experimental device was composed of a screw-in cylinder with threads,a flexible hinge,a micro-motion rod,a trabecular prosthesis,a connecting rod and a fixation post.A model of the experimental device was constructed with SolidWorks software,and then imported into ABAQUS software to establish a finite element model.An axial displacement load was applied to the femur to analyze the effects of the position of the flexible hinge,the gap between the prosthesis and the femur and the length of the connecting rod on the micro motion.Results The interface micro motion produced by the experimental device increased with the distance of the flexible hinge from the lower end of the screwed-in cylinder;the gap between the prosthesis and the femur did not affect the interface micro motion when the gap was not lower than 20 μm;the interface micro motion rose with the length of the connecting rod.Conclusion The experimental device can accurately simulate the micro motion of different bone trabecular prosthesis interfaces,and can be used for studying the effect of the interface micro motion on osseointegration.[Chinese Medical Equipment Journal,2024,45(1):25-30]
