William Ledoux, Ph.D.
VA Center of Excellence for Limb Loss Prevention and Prosthetic Engineering
E-mail: wrledoux@u...


TITLE:

"Quantifying In-Vivo and In-Vitro Bone-to-Bone Relationships: CT, MRI, Biplane Fluoroscopy and Gait Simulation"


ABSTRACT:

There are many ways to quantify the architectural (static) and kinematic (dynamic) relationships of bones.
Our research team has applied various techniques to the foot and ankle which, due to the large number of
small bones in close proximity, is a particular challenging part of the body to study.  Some of the possible
techniques include the analysis of foot prints, hindfoot alignment devices, external marker systems and
weight bearing X-rays.  Over the last 10 years, more sophisticated analyses have been conducted using CT
scans for static measurements, MRI for quasi-dynamic measurements and biplane fluoroscopy and/or dynamic
cadaveric simulations for dynamic measurements.  Our research team has employed all of these techniques to
quantify how foot structure affects foot function and has    developed some extensive in-house analysis software
packages as well.  In this talk, I will review our various methodologies and highlight some of the more important
results.