The Effect Of Reaming Velocity On The Pressure
Distribution In The Intramedullary Cavity
Author(s)
O. Gaber, K. Behdinan, J. de Beer, P. Zalzal, M. Papini
& M. Z. Saghir
Abstract
The effect of reaming velocity on the pressure distribution within the bone is
investigated numerically by solving the full three-dimensional Navier-Stokes
equations together with the continuity equation using the finite element
technique. Viscosity is also varied to obtain a pressure envelop. It was found
that all the experimental data follow the same trends as the envelopes predicted
by the finite element model. It was clear that an increase in either the implant
insertion rate or the viscosity resulted in an increase in pressure in the
intramedullary canal.
Keywords: finite element, fat embolus syndrome, porous media, Darcy equation,
intramedullary canal.
1 Introduction
Fat Embolus Syndrome (FES) is related to the extrusion of the marrow into the
venous system due to the increase of intramedullary pressure from reaming the
intramedullary canal, or the insertion of an intramedullary device. It develops in
0.5-2 % of all patients with long bone fractures, and has been associated with
high morbidity and mortality [1]. It is commonly accepted that there are three
main factors contributing to the increased intramedullary pressure and
embolisation of fat and marrow contents when performing orthopedic procedures
Keywords
finite element, fat embolus syndrome, porous media, Darcy equation,
intramedullary canal.
Related Book
Other papers in this volume
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