Hip Implants VII: Finite Element Analysis and Optimization of Cross-Sections

Anthony L. Sabatini; Tarun Goswami

doi:10.1016/j.matdes.2007.09.002

Hip Implants VII: Finite Element Analysis and Optimization of Cross-Sections

Anthony L. Sabatini, Tarun Goswami

Wright State University

Research output: Contribution to journal › Article › peer-review

Abstract

Several hip stems were re-evaluated in this paper. Finite element analysis was conducted for each of the stems with various cross-sections applied to them. Comparison of von Mises stress was made for each of the stems at the designated locations as well as the displacement was recorded. Three materials were used to perform the analysis, they were; Cr–Co–Mo, Stainless Steel SS316L, and titanium alloy, Ti–6Al–4V. Overall, Ti–6Al–4V exhibited lower stress than the other two materials. The circular and elliptical cross-sections produced even distribution of stress through out the length of the stem than the other cross-sections namely; trapezoid and oval. This analysis may explain the conditions favorable for stress-shielding in hip implants that need to be avoided. More anatomical designs are needed in the design of the total joint replacements.

Original language	American English
Journal	Materials & Design
Volume	29
DOIs	https://doi.org/10.1016/j.matdes.2007.09.002
State	Published - Jan 1 2008

Keywords

Cross-sections
Displacement
Finite element analysis
Hip stems
Von-Mises stress

Disciplines

Biomedical Engineering and Bioengineering
Engineering
Industrial Engineering
Operations Research, Systems Engineering and Industrial Engineering

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Cite this

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title = "Hip Implants VII: Finite Element Analysis and Optimization of Cross-Sections",

abstract = " Several hip stems were re-evaluated in this paper. Finite element analysis was conducted for each of the stems with various cross-sections applied to them. Comparison of von Mises stress was made for each of the stems at the designated locations as well as the displacement was recorded. Three materials were used to perform the analysis, they were; Cr–Co–Mo, Stainless Steel SS316L, and titanium alloy, Ti–6Al–4V. Overall, Ti–6Al–4V exhibited lower stress than the other two materials. The circular and elliptical cross-sections produced even distribution of stress through out the length of the stem than the other cross-sections namely; trapezoid and oval. This analysis may explain the conditions favorable for stress-shielding in hip implants that need to be avoided. More anatomical designs are needed in the design of the total joint replacements.",

keywords = "Cross-sections, Displacement, Finite element analysis, Hip stems, Von-Mises stress",

author = "Sabatini, {Anthony L.} and Tarun Goswami",

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T1 - Hip Implants VII: Finite Element Analysis and Optimization of Cross-Sections

AU - Sabatini, Anthony L.

AU - Goswami, Tarun

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N2 - Several hip stems were re-evaluated in this paper. Finite element analysis was conducted for each of the stems with various cross-sections applied to them. Comparison of von Mises stress was made for each of the stems at the designated locations as well as the displacement was recorded. Three materials were used to perform the analysis, they were; Cr–Co–Mo, Stainless Steel SS316L, and titanium alloy, Ti–6Al–4V. Overall, Ti–6Al–4V exhibited lower stress than the other two materials. The circular and elliptical cross-sections produced even distribution of stress through out the length of the stem than the other cross-sections namely; trapezoid and oval. This analysis may explain the conditions favorable for stress-shielding in hip implants that need to be avoided. More anatomical designs are needed in the design of the total joint replacements.

AB - Several hip stems were re-evaluated in this paper. Finite element analysis was conducted for each of the stems with various cross-sections applied to them. Comparison of von Mises stress was made for each of the stems at the designated locations as well as the displacement was recorded. Three materials were used to perform the analysis, they were; Cr–Co–Mo, Stainless Steel SS316L, and titanium alloy, Ti–6Al–4V. Overall, Ti–6Al–4V exhibited lower stress than the other two materials. The circular and elliptical cross-sections produced even distribution of stress through out the length of the stem than the other cross-sections namely; trapezoid and oval. This analysis may explain the conditions favorable for stress-shielding in hip implants that need to be avoided. More anatomical designs are needed in the design of the total joint replacements.

KW - Cross-sections

KW - Displacement

KW - Finite element analysis

KW - Hip stems

KW - Von-Mises stress

UR - https://corescholar.libraries.wright.edu/bie/273

U2 - 10.1016/j.matdes.2007.09.002

DO - 10.1016/j.matdes.2007.09.002

M3 - Article

VL - 29

JO - Materials & Design

JF - Materials & Design

ER -

Hip Implants VII: Finite Element Analysis and Optimization of Cross-Sections

Abstract

Keywords

Disciplines

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