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Updated: Nov 12, 2025
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
Mechanical behaviour of femoral prosthesis with various cross-section shape, implant configurations and material
Hesam Homaei1,2, Javad Jafari Fesharaki1,2
1Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
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.
