Publications

Publications

Anisotropic Constitutive Modeling and Noninvasive Wall Strength Estimation

This dissertation outlines a biomechanical approach to predicting abdominal aortic aneurysm rupture by developing and improving a rupture potential index. The author uses advanced techniques like anisotropic finite element modeling and a statistical model for noninvasive wall strength estimation to create a more accurate and patient-specific risk assessment tool.

Hexahedral Mesh Development of Free-Formed Geometry: The Human Femur Exemplified

This paper details the development of a standardized hexahedral finite element model of the human femur for biomechanical analysis. It provides a comprehensive guide on creating a high-fidelity mesh from CT data and validates the model by demonstrating that the highest predicted stresses align with common fracture locations.

Finite Element Analysis of Human Joints: Image Processing and Meshing Issues

P-L Bossart, H.E. Martz, K. Hollerbach

This paper details a semi-automated process for creating finite element models of human joints to study biomechanics. It describes the dataflow from acquiring high-resolution CT scans to generating specialized meshes, which are then used to simulate joint motion and analyze soft tissue stresses. This research aims to reduce the time and effort required to develop accurate, patient-specific models for clinical and orthopedic applications.

Investigating the Internal Stress/Strain State of the Foot Using Magnetic Resonance Imaging and FEA

Marc Thomas Petre

This biomechanics study used a new MRI-compatible device to apply loads to the foot and, combined with finite element models, measured internal stresses and strains. It found that strategies to reduce surface pressure may not significantly reduce the more critical internal stresses, which are believed to be a key factor in the development of neuropathic foot ulcers.

FEA of Chronic Contact Stress Exposure After Intra-Articular Fracture of the Tibial Plafond

This biomechanics paper uses patient-specific finite element analysis to quantify altered contact stresses in ankles after intra-articular fractures of the tibial plafond. By comparing fractured ankles to intact contralateral ankles during the stance phase of gait, the study demonstrates that residual incongruities lead to significantly elevated and less uniform contact stress exposure.