Experimental and analytical validation of a modular acetabular prosthesis in total hip arthroplasty.
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.
Romero
Francisco
F
Department of Mechanical Engineering, Biomechanics Laboratory, University of Illinois at Chicago, 842 W, Taylor Street, Room 1039, Chicago, Illinois 60607, USA. f.romero@uic.edu
Amirouche
Farid
F
Aram
Luke
L
Gonzalez
Mark H
MH