Evaluating the risk of endograft migration is important for long-term durability of endovascular aneurysm repair (EVAR) technique. In this paper we apply a step-wise coupled finite element approach to evaluate the risk of endograft migration in representative aorta models subjected to in-vivo hemodynamic displacement forces. Device stability is observed to be a strong function of aortic geometry (tortuosity, proximal fixation) with increased tortuosity or lower proximal fixation leading to greater risk of device migration.
Volume Subject Area:
Arterial Disease
Topics:
Finite element analysis,
Risk,
Aneurysms,
Aorta,
Displacement,
Durability,
Geometry,
Hemodynamics,
Maintenance,
Stability
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Copyright © 2011 by ASME
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