Medial-lateral loading and wear in TKA
Medial-lateral loading and wear in TKA
Pre-clinical wear testing of Total Knee Arthroplasty has traditionally been carried out in a physical experiment [Fisher, 2002]. Recent computational models have been shown to have sufficient accuracy to be considered alongside these experiments [Knight, 2007]. These computational models use a relationship of wear volume proportional to the product of contact pressure, sliding distance and cross shear [Maxian, 1996]. Instrumented knees have recently shown that medial-lateral (ML) loads may be of similar magnitudes to that of the anterior-posterior (AP) load. The AP load is known to have a significant effect on the kinematics of the total knee replacement and so it is reasonable to assume that application of an ML load may have a similar degree of influence on kinematics. The effect of the ML load is hypothesised to increase the cross shear and hence the wear rate. At present, the ISO standard for testing TKA contains no provision for a ML load.
p.S236
Briscoe, Adam
40a57aa0-be88-47a6-b528-ae8f0914d0e7
Strickland, Michael
7a726962-badf-4214-ac5f-a6dd731974ca
Taylor, Mark
e368bda3-6ca5-4178-80e9-41a689badeeb
July 2008
Briscoe, Adam
40a57aa0-be88-47a6-b528-ae8f0914d0e7
Strickland, Michael
7a726962-badf-4214-ac5f-a6dd731974ca
Taylor, Mark
e368bda3-6ca5-4178-80e9-41a689badeeb
Briscoe, Adam, Strickland, Michael and Taylor, Mark
(2008)
Medial-lateral loading and wear in TKA.
[in special issue: Abstracts of the 16th Congress, European Society of Biomechanics]
Journal of Biomechanics, 41, supplement 1, .
(doi:10.1016/S0021-9290(08)70235-5).
Abstract
Pre-clinical wear testing of Total Knee Arthroplasty has traditionally been carried out in a physical experiment [Fisher, 2002]. Recent computational models have been shown to have sufficient accuracy to be considered alongside these experiments [Knight, 2007]. These computational models use a relationship of wear volume proportional to the product of contact pressure, sliding distance and cross shear [Maxian, 1996]. Instrumented knees have recently shown that medial-lateral (ML) loads may be of similar magnitudes to that of the anterior-posterior (AP) load. The AP load is known to have a significant effect on the kinematics of the total knee replacement and so it is reasonable to assume that application of an ML load may have a similar degree of influence on kinematics. The effect of the ML load is hypothesised to increase the cross shear and hence the wear rate. At present, the ISO standard for testing TKA contains no provision for a ML load.
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Published date: July 2008
Additional Information:
Presentation O-232
Venue - Dates:
16th Congress of the European Society of Biomechanics, Lucerne, Switzerland, 2008-07-01
Organisations:
Bioengineering Group
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Local EPrints ID: 202739
URI: http://eprints.soton.ac.uk/id/eprint/202739
ISSN: 0021-9290
PURE UUID: b040a755-7e67-4d2c-94c7-4364806039fa
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Date deposited: 09 Nov 2011 14:19
Last modified: 14 Mar 2024 04:25
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Author:
Adam Briscoe
Author:
Michael Strickland
Author:
Mark Taylor
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