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AuthorTarlochan, Faris
AuthorMehboob, Hassan
Available date2023-01-26T07:03:28Z
Publication Date2017
Publication NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
ResourceScopus
URIhttp://dx.doi.org/10.1115/IMECE2017-70675
URIhttp://hdl.handle.net/10576/38885
AbstractTotal Hip Arthroplasty (THA) is an orthopaedic procedure that is available to reduce pain and restore the functionality of hip joints. THA has been successfully implemented for the last 40 years. However, after more than 40 years of design and implementation, premature loosening of the femoral stem still occurs due to the stress shielding. Stress shielding can be reduced by using implants with lower stiffness. This however, could increase the micromotion and interface debonding between the stem and femur bone. The aim of this study is to investigate stress and micromotion distribution across the length of the stem and to develop a bone in growth simulation model. To achieve this, a bone growth mechano-regulation algorithm based on deviatoric strain was applied to study the tissue differentiation process. The initial outcome of the study indicates that the stiffness of the implant should not be uniform rather graded from the distal to proximal and lateral to medial directions of the implant. With such graded stiffness, bone growth density was possible across the entire length of the stem, hence reducing aseptic loosening due to stress shielding. Copyright 2017 ASME.
SponsorThis work was supported in part by the NPRP under Grant# NPRP 8-876-2-375 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein solely the responsibility of the authors.
Languageen
PublisherAmerican Society of Mechanical Engineers (ASME)
SubjectBone
Stiffness
Stress
Algorithms
Arthroplasty
Biological tissues
Density
Design
Orthopedics
Performance
Simulation models
TitleA need for functionally graded stiffness femoral stem for reduction in stress shielding and promoting bone growth: Computational analysis
TypeConference Paper
Volume Number3
dc.accessType Abstract Only


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