Design and analysis of porous functionally graded femoral prostheses with improved stress shielding

Chashmi, MJ, Fathi, A, Shirzad, M, Jafari-Talookolaei, R-A, Bodaghi, M ORCID: https://orcid.org/0000-0002-0707-944X and Rabiee, SM, 2020. Design and analysis of porous functionally graded femoral prostheses with improved stress shielding. Designs, 4 (2): 12.

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Abstract

One of the most important problems of total hip replacement is aseptic loosening of the femoral component, which is related to the changes of the stress distribution pattern after implantation of the prosthesis. Stress shielding of the femur is recognized as a primary factor in aseptic loosening of hip replacements. Utilizing different materials is one of the ordinary solutions for that problem, but using functionally graded materials (FGMs) could be better than the conventional solutions. This research work aims at investigating different porous FGM implants and a real femoral bone by a 3D finite element method. The results show that a neutral functionally graded prosthesis cannot extraordinarily make changes in the stress pattern of bone and prosthesis, but an increasing functionally graded prosthesis leads a lower level of stress in the prosthesis, and a decreasing functionally graded prosthesis can properly reduce the stress shielding among these three architectures. Due to the absence of similar results in the specialized literature, this paper is likely to fill a gap in the state-of-the-art bio-implants, and provide pertinent results that are instrumental in the design of porous femoral prostheses under normal walking loading conditions.

Item Type:	Journal article
Publication Title:	Designs
Creators:	Chashmi, M.J., Fathi, A., Shirzad, M., Jafari-Talookolaei, R.-A., Bodaghi, M. and Rabiee, S.M.
Publisher:	MDPI AG
Date:	3 June 2020
Volume:	4
Number:	2
Identifiers:	Number Type 10.3390/designs4020012 DOI 1331191 Other
Rights:	© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Divisions:	Schools > School of Science and Technology
Record created by:	Linda Sullivan
Date Added:	08 Jun 2020 09:52
Last Modified:	08 Jun 2020 09:52
URI:	https://irep.ntu.ac.uk/id/eprint/39934

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