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Assessment of knee implant alignment using coordinate measurement on three-dimensional computed tomography reconstructions
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 2832893
Author(s) Nowakowski, Andrej M; Müller-Gerbl, Magdalena; Valderrabano, Victor
Author(s) at UniBasel Müller-Gerbl, Magdalena
Year 2012
Title Assessment of knee implant alignment using coordinate measurement on three-dimensional computed tomography reconstructions
Journal Surgical innovation
Volume 19
Number 4
Pages / Article-Number 375-84
Keywords coordinate measurement, 3-dimensional reconstruction, total knee arthroplasty, transversal support tibial plateau
Abstract The rapid development of navigation systems designed to improve implant alignment calls for precise methods to verify positioning. One new approach to assess knee implant alignment is coordinate measurement (CM) using reference objects on 3-dimensional reconstructions of computed tomographic (CT) image sequences. The objectives of this study were to determine whether implant alignment can be accurately and precisely examined with CT-based CM, and whether correct positioning of a transversal support implant can be attained using a specially developed aiming instrument. Average deviation of CT measurements from those made with a digital caliper remained within the caliper's range of error. This level of accuracy was observer independent. CT-based CM can be used for accurate and precise alignment verification. As well, precise alignment of transversal support can be achieved during implantation with a conventional aiming device, assuming the bony landmarks are appropriately recognized.
Publisher Sage
ISSN/ISBN 1553-3514 (Electronic) 1553-3506 (Linking)
edoc-URL http://edoc.unibas.ch/dok/A6338261
Full Text on edoc No
Digital Object Identifier DOI 10.1177/1553350611429689
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/22344926
ISI-Number WOS:000310680900005
Document type (ISI) Journal Article
 
   

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