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Type: Journal article
Title: The long-term wear of retrieved McKee-Farrar metal-on-metal total hip prostheses
Author: Howie, D.
McCalden, R.
Nawana, N.
Costi, K.
Pearcy, M.
Subramanian, C.
Citation: Journal of Arthroplasty, 2005; 20(3):350-357
Publisher: Churchill Livingstone Inc Medical Publishers
Issue Date: 2005
ISSN: 0883-5403
Statement of
Donald W. Howie, Richard W. McCalden, Namal S. Nawana, Kerry Costi, Mark J. Pearcy, and Chinnia Subramanian
Abstract: Twenty-four cobalt-chrome alloy McKee-Farrar matching acetabular and femoral components were retrieved at revision total hip arthroplasty. The average time in situ was 16 years. Wear and loss of sphericity was very low. Polishing wear (type 1), fine abrasive (type 2), multidirectional dull abrasive (type 3), and unidirectional dull abrasive wear (type 4) of the articulating surfaces were identified. The mean percent area of femoral heads occupied by types 2, 3, and 4 wear was 18%, 5%, and 2%, respectively. There was no association between the type and distribution of wear and the time in situ. Impingement damage was evident on 9 implant pairs. The extent and types of wear described in this paper will be useful when analyzing the patterns of surface damage of newer designs of metal-on-metal articulations.
Keywords: hip arthroplasty
electron microscopy
Description: Copyright © 2005 Elsevier Inc.
DOI: 10.1016/j.arth.2004.09.028
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Appears in Collections:Aurora harvest 6
Orthopaedics and Trauma publications

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