全髋关节置换术中模块化髋臼假体的实验与分析验证

Experimental and analytical validation of a modular acetabular prosthesis in total hip arthroplasty.

作者信息

Romero Francisco, Amirouche Farid, Aram Luke, Gonzalez Mark H

机构信息

Department of Mechanical Engineering, Biomechanics Laboratory, University of Illinois at Chicago, 842 W, Taylor Street, Room 1039, Chicago, Illinois 60607, USA.

出版信息

J Orthop Surg Res. 2007 May 16;2:7. doi: 10.1186/1749-799X-2-7.

DOI:10.1186/1749-799X-2-7

PMID:17506882

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1891272/

Abstract

A finite element model has been developed to predict in vivo micro motion between a modular acetabular cup and liner after cement less total hip arthroplasty. The purpose of this study is to experimentally validate the model. Six LVDT sensors were used to monitor the micromotion of the liner when subjected to loading conditions ranging from 250 N to 5000 N. Deformations at points of interest for both the experiment and FEM were compared. Results of the FEM with different coefficient of friction between the liner and the cup were investigated to correlate with the experimental results.

摘要

已经开发了一种有限元模型，用于预测无水泥全髋关节置换术后模块化髋臼杯与内衬之间的体内微动。本研究的目的是通过实验验证该模型。使用六个线性可变差动变压器（LVDT）传感器来监测内衬在250 N至5000 N载荷条件下的微动。比较了实验和有限元模型中感兴趣点的变形。研究了内衬与髋臼杯之间具有不同摩擦系数的有限元模型结果，以使其与实验结果相关联。