Selection methodology of femoral stems under fatigue loading conditions

Abstract

The endurance properties of a femoral stem under fatigue loading must be known and the methodology proposed in this work provides the mathematical tools for designers of femoral stems and orthopedic surgeons to select the adequate material and femoral stem design with a new graph that condensate the information in an easy to use selection process. Initially, the theoretical and computational development of the fatigue analysis provides comparable results with an average error of 8.3%. And the formulated methodology with the aim of selecting the mechanical device with the best fatigue performance with an average error of 8.7%.

Keywords:

• Femoral stem
• selection methodology
• fatigue analysis
• theoretical approach
• finite element analysis

Acknowledgments

The authors thank the Mechanical Engineering program, the Human Centered Design (HCD) research group, the Energy, Materials, and Environment (GEMA) research group of Universidad de La Sabana for providing the computational facilities, software, and laboratories to carry out this work. A special thanks to Clinica Universidad de La Sabana.

Disclosure statement

The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Additional information

Funding

The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the General Research Directorate of Universidad de La Sabana through project ING-265-2020.