Pre-clinical analysis of an acetabular cup with improved in-vivo stability and integrity


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. , Trans Tech, 31-34. (Key Engineering Materials, 396-398 21). (doi:10.4028/www.scientific.net/KEM.396-398.31).

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Description/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.

Item Type: Book Section
Digital Object Identifier (DOI): doi:10.4028/www.scientific.net/KEM.396-398.31
ISSNs: 1013-9826 (print)
Keywords: finite element analysis (fea), preclinical analysis, prosthesis design
Subjects: Q Science > Q Science (General)
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Bioengineering Sciences
ePrint ID: 143437
Date Deposited: 12 Apr 2010 09:21
Last Modified: 27 Mar 2014 19:05
URI: http://eprints.soton.ac.uk/id/eprint/143437

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