A New Technique for Measuring Wear in Total Hip Arthroplasty Using Computed Tomography
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
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.
Error measurement, High-resolution CT scanners, Hip phantom, Polyethylene wear, Precision measurement
IdentifiersURN: urn:nbn:se:kth:diva-103527DOI: 10.1016/j.arth.2012.03.053ISI: 000309335400010ScopusID: 2-s2.0-84866413002OAI: oai:DiVA.org:kth-103527DiVA: diva2:561069
FunderICT - The Next Generation
QC 20121017. QC 201602142012-10-172012-10-152016-02-14Bibliographically approved