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AuthorOshkour, Azim Ataollahi
AuthorTalebi, Hossein
AuthorShirazi, Seyed Farid Seyed
AuthorBayat, Mehdi
AuthorYau, Yat Huang
AuthorTarlochan, Faris
AuthorAbu Osman, Noor Azuan
Available date2016-06-12T10:03:45Z
Publication Date2014-08
Publication NameThe Scientific World Journal
ResourceScopus
CitationAzim Ataollahi Oshkour, Hossein Talebi, Seyed Farid Seyed Shirazi, et al., "Comparison of Various Functionally Graded Femoral Prostheses by Finite Element Analysis," The Scientific World Journal, vol. 2014, Article ID 807621, 17 pages, 2014.
ISSN1537-744X
URIhttp://dx.doi.org/10.1155/2014/807621
URIhttp://hdl.handle.net/10576/4612
AbstractThis study is focused on finite element analysis of a model comprising femur into which a femoral component of a total hip replacement was implanted. The considered prosthesis is fabricated from a functionally graded material (FGM) comprising a layer of a titanium alloy bonded to a layer of hydroxyapatite. The elastic modulus of the FGM was adjusted in the radial, longitudinal, and longitudinal-radial directions by altering the volume fraction gradient exponent. Four cases were studied, involving two different methods of anchoring the prosthesis to the spongy bone and two cases of applied loading. The results revealed that the FG prostheses provoked more SED to the bone. The FG prostheses carried less stress, while more stress was induced to the bone and cement. Meanwhile, less shear interface stress was stimulated to the prosthesis-bone interface in the noncemented FG prostheses. The cement-bone interface carried more stress compared to the prosthesis-cement interface. Stair climbing induced more harmful effects to the implanted femur components compared to the normal walking by causing more stress. Therefore, stress shielding, developed stresses, and interface stresses in the THR components could be adjusted through the controlling stiffness of the FG prosthesis by managing volume fraction gradient exponent.
SponsorUniversity of Malaya, Ministry of Higher Education, High Impact Research (UM,MOHE,HIR) Project no. D000010-16001.
Languageen
PublisherHindawi
SubjectBone Cements
Durapatite
Elastic Modulus
Femur
Finite Element Analysis
Hip Prosthesis
Materials Testing
Models, Anatomic
Prosthesis Design
Stress, Mechanical
Titanium
TitleComparison of various functionally graded femoral prostheses by finite element analysis
TypeArticle
Volume Number2014
dc.accessType Open Access


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