Pre-clinical analysis of an acetabular cup with improved in-vivo stability and integrity
Pre-clinical analysis of an acetabular cup with improved in-vivo stability and integrity
A finite element analysis study was conducted to produce a ceramic bearing modular acetabular cup prosthesis design with reduced wall thickness, allowing a larger diameter bearing to be used reducing dislocation risk but without compromising bone conservation. In addition to geometric design, pre-assembly of the modular components was considered, so that the integrity of the cup in-vivo would be maintained, potentially reducing fracture risk and the incidence of squeaking. The result was a design with 4mm larger bearing diameter but 20% lower peak ceramic stress than current technology, and an assembly technique predicted to maintain implant integrity in the presence of dimensional variation from manufacturing. Such a design would represent an improvement in stability and integrity in-vivo over current technology, and a necessary improvement in prosthesis design.
finite element analysis (fea), preclinical analysis, prosthesis design
31-34
Dickinson, Alexander
10151972-c1b5-4f7d-bc12-6482b5870cad
Browne, Martin
6578cc37-7bd6-43b9-ae5c-77ccb7726397
Jeffers, Jonathan
179754e3-dfe2-4223-a289-a0baba258a39
Taylor, Andrew
39974814-4868-4c73-a3fa-2adfa4be3e46
October 2008
Dickinson, Alexander
10151972-c1b5-4f7d-bc12-6482b5870cad
Browne, Martin
6578cc37-7bd6-43b9-ae5c-77ccb7726397
Jeffers, Jonathan
179754e3-dfe2-4223-a289-a0baba258a39
Taylor, Andrew
39974814-4868-4c73-a3fa-2adfa4be3e46
Dickinson, Alexander, Browne, Martin, Jeffers, Jonathan and Taylor, Andrew
(2008)
Pre-clinical analysis of an acetabular cup with improved in-vivo stability and integrity.
In,
Prado, Marcelo and Zavaglia, Cecilia
(eds.)
Bioceramics 21.
(Key Engineering Materials, 21, 396-398)
Switzerland.
Trans Tech Publications, .
(doi:10.4028/www.scientific.net/KEM.396-398.31).
Record type:
Book Section
Abstract
A finite element analysis study was conducted to produce a ceramic bearing modular acetabular cup prosthesis design with reduced wall thickness, allowing a larger diameter bearing to be used reducing dislocation risk but without compromising bone conservation. In addition to geometric design, pre-assembly of the modular components was considered, so that the integrity of the cup in-vivo would be maintained, potentially reducing fracture risk and the incidence of squeaking. The result was a design with 4mm larger bearing diameter but 20% lower peak ceramic stress than current technology, and an assembly technique predicted to maintain implant integrity in the presence of dimensional variation from manufacturing. Such a design would represent an improvement in stability and integrity in-vivo over current technology, and a necessary improvement in prosthesis design.
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Published date: October 2008
Keywords:
finite element analysis (fea), preclinical analysis, prosthesis design
Identifiers
Local EPrints ID: 143437
URI: http://eprints.soton.ac.uk/id/eprint/143437
ISSN: 1013-9826
PURE UUID: 9cb3ebef-aed5-483b-8230-97b7c48922c5
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Date deposited: 12 Apr 2010 09:21
Last modified: 14 Mar 2024 02:52
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Contributors
Author:
Jonathan Jeffers
Author:
Andrew Taylor
Editor:
Marcelo Prado
Editor:
Cecilia Zavaglia
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