ABSTRACT
Hip replacement implants are currently increasing worldwide. However, the number
of failing implants is also relatively high. In this paper, the design of a prosthesis hip
joint is analyzed using finite element analysis. A FE model was developed in
accordance with the ISO standard and was verified using ANSYS and SIEMENS
NX packages. Furthermore, FE results were verified using published experimental
results. The verified FE model was then used to simulate the joint under dynamic
loading taking into account the effect of level of activity on scaling the loads up. Two
material types: TI-6AL-4V and Cobalt–chromium alloys were used and the results
showed that TI-6AL-4V alloy proved to have more durability under dynamic loading.
In addition, the results showed that the level and type of life activates have an
obvious and a pronounced effect on the service life of the prosthesis joint.