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Paper Abstract and Keywords
Presentation 2008-01-26 15:25
Quantitative evaluation of Knee Instability using Intelligent IMU sensors
Keiro Kawano, Syoji Kobashi (Univ. of Hyogo), Yohei Tsumori (Hyogo College of Med.), Nao Shibanuma (Kobe Kaisei Hospital), Seturo Imawaki (Ishikawa Hospital), Masayoshi Yagi, Shinichi Yoshiya (Hyogo College of Med.), Yutaka Hata (Univ. of Hyogo) MI2007-147
Abstract (in Japanese) (See Japanese page) 
(in English) The pivot shift test has been performed to assess the instability of the knee caused by ACL (anterior cruciate ligament) injuries. In previous reports, evaluations of the test have correlated with degrees of ACL injuries, and the test has been used for deciding treatment policy. However, the test depends on the clinician’s subjective feeling. In this study, intelligent IMU sensors, which can measure time-series data of accelerations, angular velocities and earth magnetisms simultaneously, has been introduced into evaluating pivot shift test. The proposed method quantifies the pivot shift phenomenon as relative accelerations of the shank region by using time-frequency analysis. In the result of applying this method to the ACL injured subject, pivot shift phenomenon was detected correctly in comparison with video images taken simultaneously, the mean value of the maximum accelerations was 2.19±0.69 m/s^2, and the correlation was indicated with grade values based on the clinician’s subjective feeling.
Keyword (in Japanese) (See Japanese page) 
(in English) Inertial measurement unit / Frequency analysis / Knee joint / Anterior cruciate ligament / Kinematics analysis / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 461, MI2007-147, pp. 457-462, Jan. 2008.
Paper # MI2007-147 
Date of Issue 2008-01-18 (MI) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee MI  
Conference Date 2008-01-25 - 2008-01-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Naha-Bunka-Tenbusu 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Medical Imaging 
Paper Information
Registration To MI 
Conference Code 2008-01-MI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Quantitative evaluation of Knee Instability using Intelligent IMU sensors 
Sub Title (in English)  
Keyword(1) Inertial measurement unit  
Keyword(2) Frequency analysis  
Keyword(3) Knee joint  
Keyword(4) Anterior cruciate ligament  
Keyword(5) Kinematics analysis  
1st Author's Name Keiro Kawano  
1st Author's Affiliation University of Hyogo (Univ. of Hyogo)
2nd Author's Name Syoji Kobashi  
2nd Author's Affiliation University of Hyogo (Univ. of Hyogo)
3rd Author's Name Yohei Tsumori  
3rd Author's Affiliation Hyogo College of Medicine (Hyogo College of Med.)
4th Author's Name Nao Shibanuma  
4th Author's Affiliation Kobe Kaisei Hospital (Kobe Kaisei Hospital)
5th Author's Name Seturo Imawaki  
5th Author's Affiliation Ishikawa Hospital (Ishikawa Hospital)
6th Author's Name Masayoshi Yagi  
6th Author's Affiliation Hyogo College of Medicine (Hyogo College of Med.)
7th Author's Name Shinichi Yoshiya  
7th Author's Affiliation Hyogo College of Medicine (Hyogo College of Med.)
8th Author's Name Yutaka Hata  
8th Author's Affiliation University of Hyogo (Univ. of Hyogo)
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Date Time 2008-01-26 15:25:00 
Presentation Time 10 
Registration for MI 
Paper # IEICE-MI2007-147 
Volume (vol) IEICE-107 
Number (no) no.461 
Page pp.457-462 
#Pages IEICE-6 
Date of Issue IEICE-MI-2008-01-18 

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