Document Type
Thesis
Date of Award
1-31-1986
Degree Name
Master of Science in Mechanical Engineering - (M.S.)
Department
Mechanical Engineering
First Advisor
Michael Pappas
Second Advisor
Harry Herman
Third Advisor
Bernard Koplik
Abstract
Femoral component loosening and prosthetic stem fractures have renewed interest in conservative alternatives to conventional total hip replacements. The objective in this study is to get interfacial stresses of a acetabular surface replacement cup. This is done by performing finite element analysis of the model. A solid three - dimensional model with a grid of 3D isoparametric solid elements is generated using ANSYS, a powerful finite element analysis package. The stiffness is considered to be linearly proportional to the stress in the acetabular region. The stresses are determined by performing iterative finite element analysis. Stresses arp computed using two different prosthetic cups to allow comparison of the interfacial stresses, resulting from the use of a metal(Cobalt, Chromium and Molybednum alloy) backed polyethulene(UHMWPE) and a plain polyethylene cup without metal backing. Since the peak loads for ascending stairs were higher, these loads were used for analysis. The comparative study of the two types of cups reveals that stress distribution due to metal backed cup is more uniformly distributed and thus more desirable.
Recommended Citation
Reddy, Katkuri Venkat Rammanohar, "Finite element analysis of the prosthetic acetabular region" (1986). Theses. 3373.
https://digitalcommons.njit.edu/theses/3373
