Mechanical performance of ceramic acetabular liners under impact conditions

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Title: Mechanical performance of ceramic acetabular liners under impact conditions
Authors: Maher, Suzanne A.
Lipman, Joseph D.
Curley, Luke J.
Gilchrist, M. D.
et al.
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Date: Oct-2003
Abstract: Although new generation alumina ceramics have exhibited a reduced incidence of fracture, concern still persists about the behavior of ceramic acetabular liners under impact conditions. The objective of this study was to explore whether fracture of a new generation alumina ceramic liner was likely to occur in vivo. Ceramic liners were impacted with forces of 23, 21, 15, and 12 kN (n = 3 at each force). At 23 kN, all 3 ceramic liners fractured on the first impact; at 12 kN none of the ceramic liners fractured after 20 impacts. The threshold force of 12 kN is large in comparison with estimated physiologic forces on the hip during falls or stumbling, suggesting that ceramic liner fracture is not a definite consequence of liner impact.
Type of material: Journal Article
Publisher: Elsevier
Copyright (published version): 2003 Elsevier
Keywords: Ceramic acetabular liner;Impingement;Impact;Total hip arthroplasty;Alternate bearings;Alumina
DOI: 10.1016/S0883-5403(03)00335-8
Language: en
Status of Item: Peer reviewed
Appears in Collections:Mechanical & Materials Engineering Research Collection

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