Ultra-long-term knee wear testing: an in-silico perspective
Ultra-long-term knee wear testing: an in-silico perspective
Wear is one of the many factors which concern total knee replacement (TKR) designers. With younger patients & increasing life expectancy, new TKR designs face a longer service life[1]. This has implications for conventional wear testing, typical in-vitro tests of 10 million cycles (MCycles) may represent only a fraction of this extended lifespan. Ultra-long term wear tests may reveal the extent to which TKR mechanics adapt over time; e.g. kinematics, contact area (CA), contact pressure (CP) and cross-shear (CS). It is unclear to what extent this long-term adaptation would be dependent on the test design (e.g. control method or input waveforms), as well as implant geometry. A 50MCycle test would take >1year to run in-vitro; hence in-silico methods offer a valuable complementary ‘screening tool’, to determine whether such ultra-long-term tests would be justified
Strickland, Michael A.
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Knight, L.A.
1c1cf1d5-d4ad-4152-983c-d967a399a767
Taylor, Mark
e368bda3-6ca5-4178-80e9-41a689badeeb
July 2010
Strickland, Michael A.
6b639de6-cb09-4383-bf06-576eb6aef448
Knight, L.A.
1c1cf1d5-d4ad-4152-983c-d967a399a767
Taylor, Mark
e368bda3-6ca5-4178-80e9-41a689badeeb
Strickland, Michael A., Knight, L.A. and Taylor, Mark
(2010)
Ultra-long-term knee wear testing: an in-silico perspective.
17th Congress of the European Society of Biomechanics, Edinburgh, United Kingdom.
05 - 08 Jul 2010.
1 pp
.
Record type:
Conference or Workshop Item
(Poster)
Abstract
Wear is one of the many factors which concern total knee replacement (TKR) designers. With younger patients & increasing life expectancy, new TKR designs face a longer service life[1]. This has implications for conventional wear testing, typical in-vitro tests of 10 million cycles (MCycles) may represent only a fraction of this extended lifespan. Ultra-long term wear tests may reveal the extent to which TKR mechanics adapt over time; e.g. kinematics, contact area (CA), contact pressure (CP) and cross-shear (CS). It is unclear to what extent this long-term adaptation would be dependent on the test design (e.g. control method or input waveforms), as well as implant geometry. A 50MCycle test would take >1year to run in-vitro; hence in-silico methods offer a valuable complementary ‘screening tool’, to determine whether such ultra-long-term tests would be justified
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Published date: July 2010
Venue - Dates:
17th Congress of the European Society of Biomechanics, Edinburgh, United Kingdom, 2010-07-05 - 2010-07-08
Organisations:
Bioengineering Group
Identifiers
Local EPrints ID: 202761
URI: http://eprints.soton.ac.uk/id/eprint/202761
PURE UUID: 9f3c2195-cee5-4994-b30c-1abdf7c0d208
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Date deposited: 09 Nov 2011 14:11
Last modified: 14 Mar 2024 04:25
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Contributors
Author:
Michael A. Strickland
Author:
L.A. Knight
Author:
Mark Taylor
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