engleski

Reverse engineering based integrity assessment of a total hip prosthesis

The structural strength of a total hip prosthesis was investigated based on a 3D scanning procedure of a hip prosthesis and Finite Element Analysis. 3D scanning was performed by the ATOS 3D scanner, and the CAD model was built using Geomagic Design X software. The obtained CAD model was imported to Finite Element simulation software Abaqus to generate a FEM model. By using the developed FEM model stress and strain distribution in the femoral component were calculated for a typical human walking load case. The analysis was performed for a newly implanted prosthesis and for a case with loosened femoral component of the same hip prosthesis. The analysis results show that in case of loosened femoral component stress concentrations occur at locations where fatigue problems in real cases were observed.

Total hip prosthesis ; 3D scanning ; stress analysis ; reverse engineering

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