Static structural analysis of hip joint with various profiles by finite element method

Abstract

The hip joint is one of the primary joints which give stability to the body. The hip anthroplasty surgery is performed due to constant wear and tear of the hip due to a person’s age and various factors. Due to this surgery, the joints are replaced by the implants made up of mostly Cobalt Chromium alloy (CoCr), Titanium alloy, Stainless Steel (SS316L). A comparative study will be done amongst these materials so as to choose the better one. Also various shapes with different design profiles will be modeled and analyzed by using finite element method and the best results will be tabulated. The profiles studied are circular, ellipse and rectangular profile. The main aim of this research is to find best material as implant and also best design so that minimum amount of wear takes place during practical situations for the comfort of the person. Based on various results obtained by Finite element analysis (FEA) like Von-Mises stress, Total deformation, Equivalent Elastic Strain, it has been found that the CoCr is the best material to be used as hip implants for static loading conditions.