Studies to increase prosthesis performance and service life in total hip prosthesis design have gained speed in recent years with the development of surgical methods, materials and production technologies. Practical structural and mechanical solutions that adapt to changing and evolving biomedical technology have become one of the main problems in engineering science today. For this reason, the scientists have been focused on analytical, numerical and experimental studies on the different behaviors of structural and mechanical components made of biomedical materials. The finite element method provides important information about the strength performance of new prosthesis designs without prototype production and physical tests. In this study, the static performance of the prosthesis is investigated by using the finite element method on the ASTM F2996-20 hip prosthesis stem model using Ti-6Al-4V material, which is widely used in hip prostheses. In addition, the effects of mesh type and element size on stress and strain were analyzed numerically by using ANSYS 19 package software. The results show that if the element size is smaller than 1mm, it has no significant effect on the stress and strain, but the solution is not economical by increasing the processing time considerably.

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Fatigue life estimation is one of the vital factors in the design of biomedical prostheses. But fatigue tests of a hip prosthesis require over ten million cycles, furthermore experimental methods may be too expensive and take a long time for material selection or optimization. Therefore, numerical analyses performed by Finite Elements Methods (FEM) becomes necessary to pre-estimation of fatigue life. In this study, a numerical analysis performed by FEM analysis to estimate the fatigue performance of newly designed hip prosthesis. Prior to experimental testing processes, aimed to analyze the candidate designs and to contribute to complete of the verification process in a more efficient, economical, and fast manner.