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Paper Abstract and Keywords
Presentation 2011-06-17 13:25
A musculoskeletal model-based estimation of shoulder muscle forces for elevating the upper arm in case of rotator cuff tears
Naoki Kinoshita, Toyohiko Hayashi, Yoshinobu Maeda, Tetsuya Watanabe (Niigata Univ.), Hiroshi Tanaka, Hiroki Ninomiya, Masahiko Komai, Katsuya Nobuhara (Nobuhara hospital) MBE2011-14
Abstract (in Japanese) (See Japanese page) 
(in English) Rotator cuff tear is one of the typical muscle disorders in shoulder. This tear is believed to change the activity pattern in shoulder muscles. The actual change in muscle activity, however, is still unclear. Then, it is strongly required in clinic that the change in muscle activity due to rotator cuff tear be clarified. The purpose of this study is to estimate the muscle forces in shoulder with and without rotator cuff tear during the abduction of the upper arm by means of computer simulation. The shoulder model consists of three different models as follows: 1) bone models including humerus, scapula and clavicle; 2) muscle models including all outer and inner muscles; and 3) 6-degree-of-freedom movement model of the abduction. We prepared three different abnormal shoulder models with slight, severe and complete tears in supraspinatus. Simulation results suggested that compensatory muscle activity due to rotator cuff tear could occur primarily in infraspinatus, subscapularis and the anterior and intermediate portions of deltoid.
Keyword (in Japanese) (See Japanese page) 
(in English) shoulderl / musculoskeletal model / estimation of muscle force / rotator cuff tear / supraspinatus / simulation / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 84, MBE2011-14, pp. 19-24, June 2011.
Paper # MBE2011-14 
Date of Issue 2011-06-10 (MBE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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 MBE  
Conference Date 2011-06-17 - 2011-06-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ME in general 
Paper Information
Registration To MBE 
Conference Code 2011-06-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A musculoskeletal model-based estimation of shoulder muscle forces for elevating the upper arm in case of rotator cuff tears 
Sub Title (in English)  
Keyword(1) shoulderl  
Keyword(2) musculoskeletal model  
Keyword(3) estimation of muscle force  
Keyword(4) rotator cuff tear  
Keyword(5) supraspinatus  
Keyword(6) simulation  
Keyword(7)  
Keyword(8)  
1st Author's Name Naoki Kinoshita  
1st Author's Affiliation Niigata University (Niigata Univ.)
2nd Author's Name Toyohiko Hayashi  
2nd Author's Affiliation Niigata University (Niigata Univ.)
3rd Author's Name Yoshinobu Maeda  
3rd Author's Affiliation Niigata University (Niigata Univ.)
4th Author's Name Tetsuya Watanabe  
4th Author's Affiliation Niigata University (Niigata Univ.)
5th Author's Name Hiroshi Tanaka  
5th Author's Affiliation Nobuhara hospital and instituete of biomechanics (Nobuhara hospital)
6th Author's Name Hiroki Ninomiya  
6th Author's Affiliation Nobuhara hospital and instituete of biomechanics (Nobuhara hospital)
7th Author's Name Masahiko Komai  
7th Author's Affiliation Nobuhara hospital and instituete of biomechanics (Nobuhara hospital)
8th Author's Name Katsuya Nobuhara  
8th Author's Affiliation Nobuhara hospital and instituete of biomechanics (Nobuhara hospital)
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Speaker Author-1 
Date Time 2011-06-17 13:25:00 
Presentation Time 25 minutes 
Registration for MBE 
Paper # MBE2011-14 
Volume (vol) vol.111 
Number (no) no.84 
Page pp.19-24 
#Pages 6 
Date of Issue 2011-06-10 (MBE) 

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