Boese, Christoph K., Bredow, Jan, Dargel, Jens, Eysel, Peer, Geiges, Hansjoerg and Lechler, Philipp (2016). Calibration Marker Position in Digital Templating of Total Hip Arthroplasty. J. Arthroplast., 31 (4). S. 883 - 888. PHILADELPHIA: CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS. ISSN 1532-8406

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Abstract

Background: We report a mathematical method to assess the vertical and horizontal positions of spherical radiopaque objects of known size in conventional radiographs. Methods: The reliability and validity of the method were tested in an experimental setting and applied to 100 anteroposterior pelvic radiographs with external calibration markers and unilateral total hip arthroplasty (THA). Results: We found excellent reliabilities; intraclass correlation coefficients for interobserver and intra-observer reliabilities were 0.999-1.000 (P = .000). The mean normal height of THA was 198 mm (range: 142-243 mm, standard deviation: 18 mm) above the detector. Vertical and horizontal external marker positions differed significantly from the true hip center (THA; P < .001 and P = .017). Conclusion: This method could enhance patient safety by enabling automated detection of malpositioned calibration markers by templating software. (C) 2016 Elsevier Inc. All rights reserved.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Boese, Christoph K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bredow, JanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dargel, JensUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Eysel, PeerUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Geiges, HansjoergUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lechler, PhilippUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-279905
DOI: 10.1016/j.arth.2015.10.009
Journal or Publication Title: J. Arthroplast.
Volume: 31
Number: 4
Page Range: S. 883 - 888
Date: 2016
Publisher: CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS
Place of Publication: PHILADELPHIA
ISSN: 1532-8406
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
REPLACEMENT; ACCURACY; MAGNIFICATION; RADIOGRAPHS; ROTATIONMultiple languages
OrthopedicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/27990

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