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A New Technique for Measuring Wear in Total Hip Arthroplasty Using Computed Tomography
Massachusetts General Hospital, Boston MA, USA. (Harris Orthopaedic Laboratory)
New York University, Department of Radiology. (Nuclear Medicine)ORCID iD: 0000-0002-2442-1622
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.ORCID iD: 0000-0002-6066-746X
Karolinska Institutet, Sweden. (Department of Molecular Medicine and Surgery, Section of Orthopaedics and Sport Medicine)
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2012 (English)In: The Journal of Arthroplasty, ISSN 0883-5403, E-ISSN 1532-8406, Vol. 27, no 9, 1636-1640 p.Article in journal (Refereed) Published
Abstract [en]

Accurately estimating polyethylene wear in 3 dimensions, without the need for additional procedures or equipment, is of significant interest. We investigated the use of a high-resolution clinical computed tomographic (CT) scanner to estimate femoral head displacement relative to the cup as an indirect method of estimating polyethylene wear. A hip phantom was used to simulate the 3-dimensional displacement of a femoral head. The phantom was imaged in a high-resolution CT scanner. The mean difference between the true phantom displacement as positioned by micrometers and the calculated displacement based on the CT images was as follows: for the x-axis, 0 mm (SD, 0.213; SE, 0.058); y-axis, 0.039 mm (SD, 0.035; SE, 0.026); and z-axis, 0.039 mm (SD, 0.051; SE, 0.020).

Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 27, no 9, 1636-1640 p.
Keyword [en]
Error measurement, High-resolution CT scanners, Hip phantom, Polyethylene wear, Precision measurement
National Category
Medical Engineering
URN: urn:nbn:se:kth:diva-103527DOI: 10.1016/j.arth.2012.03.053ISI: 000309335400010ScopusID: 2-s2.0-84866413002OAI: diva2:561069
ICT - The Next Generation

QC 20121017. QC 20160214

Available from: 2012-10-17 Created: 2012-10-15 Last updated: 2016-02-14Bibliographically approved

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Noz, Marilyn E.Maguire, Gerald Q.
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