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dc.contributor.authorCampbell, D.-
dc.contributor.authorMercer, G.-
dc.contributor.authorNilsson, K.-
dc.contributor.authorWells, V.-
dc.contributor.authorField, J.-
dc.contributor.authorCallary, S.-
dc.identifier.citationInternational Orthopaedics, 2009; 35(4):483-488-
dc.descriptionThe original publication is available at
dc.description.abstractMeasurement 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.-
dc.description.statementofresponsibilityDavid Campbell, Graham Mercer, Kjell G. Nilsson, Vanessa Wells, John R. Field and Stuart A. Callary-
dc.rights© Springer-Verlag 2009-
dc.subjectHip Joint-
dc.subjectOsteoarthritis, Hip-
dc.subjectProsthesis Failure-
dc.subjectCoated Materials, Biocompatible-
dc.subjectRange of Motion, Articular-
dc.subjectTreatment Outcome-
dc.subjectArthroplasty, Replacement, Hip-
dc.subjectProspective Studies-
dc.subjectProsthesis Design-
dc.subjectHip Prosthesis-
dc.subjectHealth Status-
dc.subjectAged, 80 and over-
dc.subjectMiddle Aged-
dc.titleEarly migration characteristics of a hydroxyapatite-coated femoral stem: an RSA study-
dc.typeJournal article-
dc.identifier.orcidCampbell, D. [0000-0002-1572-9529]-
dc.identifier.orcidCallary, S. [0000-0002-2892-5238]-
Appears in Collections:Aurora harvest 5
Orthopaedics and Trauma publications

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