The final follow-up plain radiograph is sufficient for clinical evaluation of polyethylene wear in total hip arthroplasty.
Background and purpose Radiostereometric analysis (RSA) is a highly accurate tool for assessment of polyethylene (PE) wear in total hip arthroplasty (THA); however, PE wear measurements in clinical studies are often limited to plain radiographs. We evaluated the agreement between PE wear measured wi...
| Published in: | Acta Orthopaedica Vol. 81; no. 5; pp. 570 - 579 |
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| Main Authors: | , , , , , |
| Format: | diagnostic images equations & formulas research tables/charts Journal Article |
| Published: |
Medical Journals Sweden AB
Oct2010
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=54301199&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 54301199 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 17453674 1BVL jtl: Acta Orthopaedica issn: 17453674 maglogo: N pubinfo: dt: Oct2010 vid: 81 iid: 5 pid: 59195 pub: Medical Journals Sweden AB artinfo: ui: 54301199 104928098 104928098 10.3109/17453674.2010.506632 54301199 ppf: 570 ppct: 9 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: The final follow-up plain radiograph is sufficient for clinical evaluation of polyethylene wear in total hip arthroplasty. aug: au: Stilling, Maiken Larsen, Kristian Andersen, Niels T Søballe, Kjeld Kold, Søren Rahbek, Ole affil: Department of Orthopedics, Aarhus University Hospital sug: subj: Radiostereometric Analysis Polyethylenes Orthopedic Prosthesis Evaluation Arthroplasty, Replacement, Hip Hip Joint Radiography Prosthesis Failure Human Middle Age Adult Aged Prospective Studies Time Factors Descriptive Statistics Software Male Female Reproducibility of Results Paired T-Tests Costs and Cost Analysis Confidence Intervals Concurrent Validity Data Analysis Software Comparative Studies Middle Aged: 45-64 years Adult: 19-44 years Aged: 65+ years Male Female ab: Background and purpose Radiostereometric analysis (RSA) is a highly accurate tool for assessment of polyethylene (PE) wear in total hip arthroplasty (THA); however, PE wear measurements in clinical studies are often limited to plain radiographs. We evaluated the agreement between PE wear measured with PolyWare software, which uses plain radiographs, and by model-based RSA, which uses stereo radiographs. Methods Measurements of PE wear postoperatively and at final follow-up (after mean 6 years) on plain radiographs of 12 patients after cementless THA were evaluated with PolyWare software and the results were compared with those from RSA as the gold standard (Model-based RSA using elementary geometrical shape models; EGS-RSA). With PolyWare, we either used the final radiographic follow-up (PW1) only or both the postoperative follow-up and the final follow-up (PW2). Results The 2D mean wear measured (in mm) was 0.80, 1.07, and 0.60 for the PW2, PW1, and RSA method. 2D intra-method repeatability was similar for PW1 and RSA with limits of agreement (LOAs, in mm) of ± 0.22, and ± 0.23, respectively. 2D inter-method concurrent validity was best between PW1 and EGS-RSA with LOAs of ± 0.55. For 2D linear wear measurements, the PW1 method had a clinical repeatability similar to that of RSA. Interpretation PW1 is sufficient for retrospective determination of 2D wear from medium-term wear measurements above 0.5 mm, It alleviates the need for baseline plain radiographs, has a clinical precision similar to that of RSA, and is easy and inexpensive to use. pubtype: Academic Journal doctype: diagnostic images equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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