Please use this identifier to cite or link to this item:
Scopus Web of Science® Altmetric
Type: Journal article
Title: Early migration characteristics of a hydroxyapatite-coated femoral stem: an RSA study
Author: Campbell, D.
Mercer, G.
Nilsson, K.
Wells, V.
Field, J.
Callary, S.
Citation: International Orthopaedics, 2009; 35(4):483-488
Publisher: Springer-Verlag
Issue Date: 2009
ISSN: 0341-2695
Statement of
David Campbell, Graham Mercer, Kjell G. Nilsson, Vanessa Wells, John R. Field and Stuart A. Callary
Abstract: Measurement of early stem subsidence can be used to predict the likelihood of long-term femoral component loosening and clinical failure. Data that examines the early migration pattern of clinically proven stems will provide clinicians with useful baseline data with which to compare new stem designs. This study was performed to evaluate the early migration pattern of a hydroxyapatite-coated press-fit femoral component that has been in use for over ten years. We enrolled 30 patients who underwent THA for osteoarthritis. The median age was 70 years (range, 55–80 years). Patients were clinically assessed using the Harris hip score. Radiostereometric analysis was used to evaluate stem migration at three to four days, six months, one year and two years. We observed a mean subsidence of 0.73 mm at six months, 0.62 mm at one year and 0.58 mm at two years and a mean retroversion of 1.82° at six months, 1.90° at one year and 1.59° at two years. This data suggests that subsidence is confined to the first six months after which there was no further subsidence. The results from this study can be compared with those from novel cementless stem designs to help predict the long-term outcome one may expect from new cementless stem designs.
Keywords: Hip Joint
Osteoarthritis, Hip
Prosthesis Failure
Coated Materials, Biocompatible
Range of Motion, Articular
Treatment Outcome
Arthroplasty, Replacement, Hip
Prospective Studies
Prosthesis Design
Hip Prosthesis
Health Status
Aged, 80 and over
Middle Aged
Description: The original publication is available at
Rights: © Springer-Verlag 2009
DOI: 10.1007/s00264-009-0913-z
Appears in Collections:Aurora harvest 5
Orthopaedics and Trauma publications

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.