Dissertation/Thesis Abstract

The author has requested that access to this graduate work be delayed until 2020-04-12. After this date, this graduate work will be available on an open access basis.
Development and Validation of Hybrid Continuum/Structural Finite Element Model for Evaluating Foot and Ankle Biomechanics
by Alrafeek, Saif, Ph.D., Western Michigan University, 2018, 152; 13877015
Abstract (Summary)

Bone is composed of two structures: compact bone and spongy bone. Spongy bone porosity highly affects the strength and the physical endurance of bone to carry loads. Most studies use continuum finite element (FE) approaches to model spongy bone and neglect porosity. Neglecting porosity may not efficiently assist orthopaedic surgeons to treat patients who experience bone physical disability. The purpose of this study is to demonstrate an inexpensive approach that simulates spongy bone with more accurate capturing of porosity and less requirements of bone information. The approach is developed through investigating the mechanical characteristics of spongy bone; that is, by creating and analyzing a structural FE model composed of stochastically oriented structural elements or "beams". Each beam element represents a trabecula. In addition, this study investigates the experimental complex biomechanics of foot and ankle bones loaded in eversion/inversion. Further, this study provides a structural-anatomical description that explains the effect of subtalar joint anatomy and screw constructs on its torsional rigidity.

Indexing (document details)
Advisor: Gustafson, Peter A.
Commitee: Gustasan, Peter A., Jastifer, James R., Kujawski, Daniel, Nughshineh, Kourosh
School: Western Michigan University
Department: Mechanical Engineering
School Location: United States -- Michigan
Source: DAI-B 80/08(E), Dissertation Abstracts International
Subjects: Biomedical engineering, Mechanical engineering
Keywords: 3D constractions, Finite element, Foot and ankle, Stochastic modeling
Publication Number: 13877015
ISBN: 9781392054550
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