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Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/73204

Type: Journal article
Title: The 6-year migration characteristics of a hydroxyapatite-coated femoral stem: a radiostereometric analysis study
Author: Callary, S.
Campbell, D.
Mercer, G.
Nilsson, K.
Field, J.
Citation: Journal of Arthroplasty, 2012; 27(7):1344-1348
Publisher: Churchill Livingstone Inc Medical Publishers
Issue Date: 2012
ISSN: 0883-5403
1532-8406
Statement of
Responsibility: 
Stuart A. Callary, David G. Campbell, Graham E. Mercer, Kjell G. Nilsson, and John R. Field
Abstract: A prospective cohort of 30 patients undergoing primary total hip arthroplasty for treatment of osteoarthritis was enrolled in a study to characterize the migration behavior of a clinically successful cementless stem. At 6 years, the mean subsidence of the stem was 0.63 mm (range, -0.33 to 3.68 mm); the mean rotation into retroversion was 1.41° (range, -1.33° to 7.48°). No stems had additional subsidence of more than 0.25 mm between 6 months and 6 years. The resultant mean subsidence between 2 and 6 years was 0.03 mm, which is below the limit measurable by radiostereometric analysis. The data demonstrate that subsidence of this cementless stem occurs within the first 6 months, after which there is persistent stabilization.
Keywords: total hip arthroplasty; radiostereometric analysis; subsidence; stabilization.
Rights: Copyright © 2012 Elsevier Inc. All rights reserved.
RMID: 0020121012
DOI: 10.1016/j.arth.2011.12.002
Appears in Collections:Orthopaedics and Trauma publications
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