Computer aided stress analysis of the femur with prosthetic hip stem utilizing computed tomography

Document Type

Conference Proceeding

Publication Date

1-1-1993

Abstract

A computer aided analysis method, utilizing computed tomography (CT) is developed, which together with a finite element program determines the stress patterns in a femur with a total hip prosthesis. The CT scan data file provides the geometry for the three-dimensional finite element model. The model of femur-prosthesis is automatically generated from the CT data file by a preprocessing procedure which includes an edge detection algorithm to determine the boundaries of the reconstructed cross sectional images of the scanned bone. The bone prosthesis is selected according to the canal size of the bone. A formatted input data for ANSYS (Swanson Analysis Systems Inc.) finite element program is generated by the preprocessor to calculate the stresses and displacements at the nodes and elements of the model. A practical method is developed to transfer the CT data to the CAD/CAM system creating a three-dimensional bone geometry. The edge data generated by the preprocessor is also introduced into a solid modeling Computer-Aided Engineering software package to produce a three-dimensional plastic solid model.

Identifier

0027188724 (Scopus)

ISBN

[0780309251]

Publication Title

Bioengineering Proceedings of the Northeast Conference

First Page

60

Last Page

61

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