Biomechanical analysis of human tibia bone based on FEA

Abstract

Abstract The main focus of this paper is to carry out computational analysis based on the technique of finite element analysis. The vibration analysis is carried out for two different boundary conditions. Firstly, the medial and lateral condyles are fixed and lateral and medial malleolus are free for the fix-free condition. Whereas, in second condition the medial and lateral condyle are fixed and lateral and medial malleolus are free for the fix-free condition. A three dimensional model of tibia bone for human is developed by using the data of MRI/CT Scan which were available online in the format of dicom and further simulations were carried out for the starting six modes outcomes. The analysis result shows that natural frequency of tibia bone which is made of material AZ31(magnesium alloy) is less than tibia bone made of CP Ti (Commercially Pure Titanium alloy) material but its natural frequency is more than the natural tibia bone. Moreover, the weight of natural tibia bone of human is 0.418 Kgs, the weight of the tibia bone made up of CP Ti is 1.31 Kgs and the weight of tibia mode of AZ31 is 0.541 Kgs. The Bone made up of AZ31 was lighter and it gives almost double the natural frequency of natural tibia bone for both the boundary condition. So, AZ31 is more suitable material for the tibia implant whereas, the heaviest material is CP Ti in all of them. So, this result is helpful for the selection of best suitable material for the tibia implant.