Research & Projects

This study comprises static and dynamic analysis of hip joint, with the aim of developing novel material with optimum fatigue and wear properties. The arthroplasty utilized in this research is hemiarthroplasty. The three- dimensional model of the femur bone is extracted from the CT scan images and post processed for building femur head geometry, which is utilized in FEA. The extraction and conversion of the DICOM images to 3D model in STL format is carried out in 3D splicer and blender software. The materials utilized in this study are PEEK, CFR-PEEK and titanium alloy. The static analysis comprises numerical and finite element analysis, utilizing loading form daily routine human activities, such as walking, climbing up or down stairs and stumbling. The dynamic analysis comprises numerical analysis and FEA, comprising utilization of SN curve data for fatigue and wear analysis. the dynamic analysis outcomes also direct to CFR PEEK material to be as ideal for implant. The life of the implant is also estimated in the dynamic analysis.

Objectives

●To identify (biocompatible material) and optimization (correct composition) of the material of femur head implant material.

● To investigate the effect of optimized material of femur on erosion characteristics of bone of acetabulum for static condition.

● To investigate the effect of material on erosion characteristics for the dynamic condition of the acetabulum.

Results

After observing the outcomes of the static and dynamic analysis performed on acetabulum, the CFR PEEK is concluded to be most suitable material for implant. Eventually after considering all the outcomes, observations and respective conclusions of the static and dynamic analyses, the CFR PEEK material is selected are the ideal material for the femur head implant in case of hemiarthroplasty.