| Literature DB >> 19361948 |
R Michael Meneghini1, Christopher Meyer, Christine A Buckley, Arlen D Hanssen, David G Lewallen.
Abstract
Highly porous metal acetabular components have emerged for revision hip arthroplasty. However, superior mechanical stability over traditional cementless components has not been demonstrated. Three different cementless acetabular components, including 2 highly porous tantalum designs, were inserted into hemipelvis specimens with a superolateral defect. Mechanical testing was performed to failure using a servohydraulic testing machine. The porous tantalum designs exhibited superior stability over the traditional cementless implant (P < .05). There was no difference in mechanical stability between the rigid modular tantalum shell and the more flexible revision tantalum shell (P > .46). In acetabular revision, highly porous tantalum acetabular components provide superior mechanical stability. However, these results suggest that improved frictional resistance is a more important design feature over implant flexibility with this particular implant. (c) 2010 Elsevier Inc. All rights reserved.Entities:
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Year: 2009 PMID： 19361948 DOI： 10.1016/j.arth.2009.03.003
Source DB: PubMed Journal: J Arthroplasty ISSN： 0883-5403 Impact factor: 4.757