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Biomedical Engineering / Biomedizinische Technik

Joint Journal of the German Society for Biomedical Engineering in VDE and the Austrian and Swiss Societies for Biomedical Engineering and the German Society of Biomaterials

Editor-in-Chief: Dössel, Olaf

Editorial Board: Augat, Peter / Habibović, Pamela / Haueisen, Jens / Jahnen-Dechent, Wilhelm / Jockenhoevel, Stefan / Knaup-Gregori, Petra / Lenarz, Thomas / Leonhardt, Steffen / Plank, Gernot / Radermacher, Klaus M. / Schkommodau, Erik / Stieglitz, Thomas / Boenick, Ulrich / Jaramaz, Branislav / Kraft, Marc / Lenthe, Harry / Lo, Benny / Mainardi, Luca / Micera, Silvestro / Penzel, Thomas / Robitzki, Andrea A. / Schaeffter, Tobias / Snedeker, Jess G. / Sörnmo, Leif / Sugano, Nobuhiko / Werner, Jürgen /


IMPACT FACTOR 2017: 1.096
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Online
ISSN
1862-278X
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Volume 57, Issue 4

Issues

Volume 57 (2012)

Ultrasound-based registration of the pelvic coordinate system in the lateral position using symmetry for total hip replacement

Lorenz Fieten
  • Corresponding author
  • Helmholtz Institute for Biomedical Engineering, Chair of Medical Engineering, RWTH Aachen University, Germany
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  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Ingrid Dupraz / Kilian Reising / Peter Helwig / Stefan Heger
  • Helmholtz Institute for Biomedical Engineering, Chair of Medical Engineering, RWTH Aachen University, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Wilhelm Blömer / Klaus Radermacher
  • Helmholtz Institute for Biomedical Engineering, Chair of Medical Engineering, RWTH Aachen University, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2012-05-16 | DOI: https://doi.org/10.1515/bmt-2011-0129

Abstract

In total hip replacement, patient placement in the lateral position is preferred by many surgeons. However, it complicates registration of the so-called pelvic coordinate system that is the standard reference for surgeons to measure cup orientation. This coordinate system comprises the anterior pelvic plane and the mid-sagittal plane, and it is conventionally registered on the basis of bony anatomical landmarks including the left and the right anterior superior iliac spine (ASIS). Ultrasound has been suggested for transcutaneous palpation of the bone surface. The difficulty in registration of the pelvic coordinate system with the patient in the lateral position arises because the contralateral ASIS cannot be reached easily by a mechanical pointer and is not accessible by means of an ultrasound probe. Up to now, methods to compensate for these missing data have not been used in clinical routine. This paper describes a new ultrasound-based method that requires neither image segmentation nor statistical shape models and uses symmetry to approximate the position of the contralateral ASIS. A detailed analysis based on computed tomography data of 60 hips following a cadaver study is presented to show the ability of our method to reliably reconstruct the pelvic coordinate system. The median angles between ground truth planes and the “reconstructed” planes were <2°. By choosing a standard cup orientation w.r.t. the “reconstructed” planes, the median abduction and version angle errors were <2°, too.

Keywords: anatomic; APP; cup; mid-sagittal plane; navigation; reference frame

About the article

Corresponding author: Dipl.-Ing. Lorenz Fieten, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstr. 20, D-52074 Aachen, Germany Phone: +49 (0) 241-80-23863 Fax: +49 (0) 241-80-22870


Received: 2011-12-20

Accepted: 2012-04-24

Published Online: 2012-05-16

Published in Print: 2012-08-01


Citation Information: Biomedizinische Technik/Biomedical Engineering, Volume 57, Issue 4, Pages 239–248, ISSN (Online) 1862-278X, ISSN (Print) 0013-5585, DOI: https://doi.org/10.1515/bmt-2011-0129.

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©2012 by Walter de Gruyter Berlin Boston.Get Permission

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