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Ultrasonic Measurement of Dynamic Muscle Behavior for Poststroke Hemiparetic Gait

Quantitative evaluation of the hemiparesis status for a poststroke patient is still challenging. This study aims to measure and investigate the dynamic muscle behavior in poststroke hemiparetic gait using ultrasonography. Twelve hemiparetic patients walked on a treadmill, and EMG, joint angle, and u...

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Detalles Bibliográficos
Autores principales: Chen, Xin, Zhang, Xudong, Shi, Wenxiu, Wang, Jun, Xiang, Yun, Zhou, Yongjin, Yang, Wan-Zhang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5292389/
https://www.ncbi.nlm.nih.gov/pubmed/28232945
http://dx.doi.org/10.1155/2017/8208764
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author Chen, Xin
Zhang, Xudong
Shi, Wenxiu
Wang, Jun
Xiang, Yun
Zhou, Yongjin
Yang, Wan-Zhang
author_facet Chen, Xin
Zhang, Xudong
Shi, Wenxiu
Wang, Jun
Xiang, Yun
Zhou, Yongjin
Yang, Wan-Zhang
author_sort Chen, Xin
collection PubMed
description Quantitative evaluation of the hemiparesis status for a poststroke patient is still challenging. This study aims to measure and investigate the dynamic muscle behavior in poststroke hemiparetic gait using ultrasonography. Twelve hemiparetic patients walked on a treadmill, and EMG, joint angle, and ultrasonography were simultaneously recorded for the gastrocnemius medialis muscle. Pennation angle was automatically extracted from ultrasonography using a tracking algorithm reported previously. The characteristics of EMG, joint angle, and pennation angle in gait cycle were calculated for both (affected and unaffected) sides of lower limbs. The results suggest that pennation angle could work as an important morphological index to continuous muscle contraction. The change pattern of pennation angle between the affected and unaffected sides is different from that of EMG. These findings indicate that morphological parameter extracted from ultrasonography can provide different information from that provided by EMG for hemiparetic gait.
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spelling pubmed-52923892017-02-23 Ultrasonic Measurement of Dynamic Muscle Behavior for Poststroke Hemiparetic Gait Chen, Xin Zhang, Xudong Shi, Wenxiu Wang, Jun Xiang, Yun Zhou, Yongjin Yang, Wan-Zhang Biomed Res Int Research Article Quantitative evaluation of the hemiparesis status for a poststroke patient is still challenging. This study aims to measure and investigate the dynamic muscle behavior in poststroke hemiparetic gait using ultrasonography. Twelve hemiparetic patients walked on a treadmill, and EMG, joint angle, and ultrasonography were simultaneously recorded for the gastrocnemius medialis muscle. Pennation angle was automatically extracted from ultrasonography using a tracking algorithm reported previously. The characteristics of EMG, joint angle, and pennation angle in gait cycle were calculated for both (affected and unaffected) sides of lower limbs. The results suggest that pennation angle could work as an important morphological index to continuous muscle contraction. The change pattern of pennation angle between the affected and unaffected sides is different from that of EMG. These findings indicate that morphological parameter extracted from ultrasonography can provide different information from that provided by EMG for hemiparetic gait. Hindawi Publishing Corporation 2017 2017-01-23 /pmc/articles/PMC5292389/ /pubmed/28232945 http://dx.doi.org/10.1155/2017/8208764 Text en Copyright © 2017 Xin Chen et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Chen, Xin
Zhang, Xudong
Shi, Wenxiu
Wang, Jun
Xiang, Yun
Zhou, Yongjin
Yang, Wan-Zhang
Ultrasonic Measurement of Dynamic Muscle Behavior for Poststroke Hemiparetic Gait
title Ultrasonic Measurement of Dynamic Muscle Behavior for Poststroke Hemiparetic Gait
title_full Ultrasonic Measurement of Dynamic Muscle Behavior for Poststroke Hemiparetic Gait
title_fullStr Ultrasonic Measurement of Dynamic Muscle Behavior for Poststroke Hemiparetic Gait
title_full_unstemmed Ultrasonic Measurement of Dynamic Muscle Behavior for Poststroke Hemiparetic Gait
title_short Ultrasonic Measurement of Dynamic Muscle Behavior for Poststroke Hemiparetic Gait
title_sort ultrasonic measurement of dynamic muscle behavior for poststroke hemiparetic gait
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5292389/
https://www.ncbi.nlm.nih.gov/pubmed/28232945
http://dx.doi.org/10.1155/2017/8208764
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