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Innovations

Mechanical behaviour of femoral prosthesis with various cross-section shape, implant configurations and material properties

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Pages 161-169 | Received 26 Oct 2019, Accepted 18 Jan 2021, Published online: 22 Mar 2021
 

Abstract

The maximum Von-Mises stress analysis introduced by dynamic body load on hip implant was considered in this research. The different hip stem shapes including elliptical, circular and oval cross sections with various configurations and material properties including that of Ti-6Al-4V, Co-Cr-Mo and SS316L alloys were simulated by 3D computational analysis to evaluate the “stress-shielding effect” on the implant surface. In order to categorise the various shapes and materials based on “stress-shielding effect”, a factor called “stress distribution” (SD) was developed. Results showed that the highest Von-Mises stress levels are attributed to the elliptical cross-section, whereas oval cross-sections comprised the least figures with certain stem profiles. In terms of SD factor, titanium alloy with elliptical cross section indicated the lowest level, while the better results specified to the oval shape.

Disclosure statement

No potential conflict of interest was reported by the author(s).

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