Document Type
Thesis
Date of Award
1-31-1990
Degree Name
Master of Science in Biomedical Engineering - (M.S.)
Department
Biomedical Engineering Committee
First Advisor
Clarence W. Mayott
Second Advisor
David S. Kristol
Third Advisor
Hans E. Pawel
Abstract
Recent advances in computer technology have provided both the medical community and biomedical engineers with a method for noninvasively evaluating the internal structure in a way not previously possible. A three-dimensional finite element model of a midshaft section of the femur was generated, utilizing Computed Tomography scan data. The CT scan data file was introduced into an edge-detection algorithm and a file of geometric edge data was generated. This edge data was introduced into a solid modeling Computer-Aided Engineering software package to produce a three-dimensional solid model. A mesh generation procedure was then used to create a three-dimensional finite element mesh model based on this solid geometry.
A distributed load, based on the joint forces at the hip, was applied to the proximal surface of the model. The distal end of the model was restrained from movement. The Finite Element program calculated the stresses and displacements at all nodes and elements of the model and stored these results in an output file. The results were displayed in graphical form and a comparison with the literature source was made.
Computed Tomography scan data provides an excellent source of digital geometric data, readily transferrable to computer-aided engineering software packages. This data can then be used to generate a finite element mesh model to noninvasively evaluate the stresses and deformations in long bone sections.
Recommended Citation
Marion, Peter F., "Three-dimensional stress analysis of the femoral midshaft utilizing computed tomography and finite element analysis" (1990). Theses. 2843.
https://digitalcommons.njit.edu/theses/2843
