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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
5-year IMPACT FACTOR: 1.492

CiteScore 2017: 0.48

SCImago Journal Rank (SJR) 2017: 0.202
Source Normalized Impact per Paper (SNIP) 2017: 0.356

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1862-278X
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Volume 57, Issue 4

Issues

Volume 57 (2012)

Component sizing in total knee arthroplasty: patient-specific guides vs. computer-assisted navigation

Mark A. Yaffe
  • Department of Orthopedic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
  • Other articles by this author:
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/ Anay Patel
  • Department of Orthopedic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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  • De Gruyter OnlineGoogle Scholar
/ Brett W. Mc Coy
  • Department of Orthopedic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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/ Michael Luo
  • Department of Orthopedic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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  • De Gruyter OnlineGoogle Scholar
/ Max Cayo
  • Department of Orthopedic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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/ Raju Ghate
  • Department of Orthopedic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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/ S. David Stulberg
  • Corresponding author
  • Department of Orthopedic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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  • De Gruyter OnlineGoogle Scholar
Published Online: 2012-04-10 | DOI: https://doi.org/10.1515/bmt-2011-0093

Abstract

Introduction: Patient-specific guides (PSG) and computer-assisted navigation (CAN) are technologies that have been developed to improve the accuracy and reproducibility of total knee arthroplasty (TKA). The purpose of this study is to compare the methodology by which a PSG system and an intraoperative navigation system (CAN) perform an anatomical registration and correctly predict femoral component size in TKA.

Methods: One hundred and eleven PSG TKA were performed, 30 of which were concurrently evaluated with CAN. PSG-predicted and CAN-predicted femoral component size were compared with the actual component selection. The process by which PSG and CAN determines component sizing was evaluated.

Results: The PSG system was both more accurate and more precise than the CAN navigation system in predicting femoral component size in TKA.

Conclusion: In this study, the surgeon’s final component selection was more likely to be in accordance with the PSG rather than the CAN sizing algorithm. This study suggests that intraoperative surface registration may not be as accurate as preoperative three-dimensional magnetic resonance imaging reconstructions for establishing optimal femoral component sizing.

Keywords: computer-assisted surgery; customized instrumentation; patient-specific guides; total knee arthroplasty

About the article

Corresponding author: S. David Stulberg, MD, Department of Orthopaedic Surgery, Feinberg School of Medicine, Northwestern University, 680 N. Lake Shore Dr. Suite 924, Chicago, IL 60611, USA Phone: +1-312-475-5505


Received: 2012-10-14

Accepted: 2012-02-29

Published Online: 2012-04-10

Published in Print: 2012-08-01


Citation Information: Biomedizinische Technik/Biomedical Engineering, Volume 57, Issue 4, Pages 277–282, ISSN (Online) 1862-278X, ISSN (Print) 0013-5585, DOI: https://doi.org/10.1515/bmt-2011-0093.

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