High resolution finite element modeling of cemented bone-implant interface using X-ray microtomography

0353055 - ÚTAM 2011 RIV GB eng C - Conference Paper (international conference)
Kytýř, Daniel - Jiroušek, Ondřej - Zlámal, Petr - Pokorný, D. - Dammer, J.
High resolution finite element modeling of cemented bone-implant interface using X-ray microtomography.
Proceedings of 9th International Symposium on Computer methods in Biomechanics and Biomedical Engineering. Cardiff: ARUP, 2010 - (Middleton, J.), s. 467-471. ISBN 978-0-9562121-3-9.
[International symposium on Computer methods in biomechanics and biomedial engineering /9./. Valencia (ES), 24.02.2010-27.02.2010]
R&D Projects: GA ČR(CZ) GAP105/10/2305
Institutional research plan: CEZ:AV0Z20710524
Keywords : bone-cement interface * computed tomography * high-resolution models
Subject RIV: FI - Traumatology, Orthopedics

The aim of the research was to investigate the cemented bone-implant interface behavior. To determine the degradation caused by mechanical loading both numerical and experimental approach have been used. The main problems (cement layer degradation and bone-cement interface debonding) during physiological loading conditions have been investigated using a custom hip simulator. The experimental setup was designed to allow cyclic loading of a sample of pelvic bone with implanted cemented acetabular component. The hip contact force of required direction and magnitude was applied to the implant using a spherical femoral component head. The most unfavorable activity (downstairs walking) was simulated in two million cycles with 4Hz frequency. The process of damage accumulation in cement fixation was monitored by repeated scanning using high resolution micro-focus X-ray Computed Tomography (microCT).
Permanent Link: http://hdl.handle.net/11104/0192402