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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
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
1013-9826
21
31-34
Trans Tech
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
Prado, Marcelo
Zavaglia, Cecilia
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
Prado, Marcelo
Zavaglia, Cecilia

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, pp. 31-34. (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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More information

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
ORCID for Alexander Dickinson: ORCID iD orcid.org/0000-0002-9647-1944
ORCID for Martin Browne: ORCID iD orcid.org/0000-0001-5184-050X

Catalogue record

Date deposited: 12 Apr 2010 09:21
Last modified: 20 Nov 2021 02:48

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Contributors

Author: Martin Browne ORCID iD
Author: Jonathan Jeffers
Author: Andrew Taylor
Editor: Marcelo Prado
Editor: Cecilia Zavaglia

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