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Application of shear wave elastography for the gastrocnemius medial head to tennis leg

Application of shear wave elastography for the gastrocnemius medial head to tennis leg

Authors :
Toru Okuwaki
Tatsuo Sakai
Yoshitomo Saita
Kazuo Kaneko
Yuji Takazawa
Keiichi Yoshida
Yuichiro Maruyama
Hiroshi Ikeda
Yoshiaki Itoigawa
Source :
Clinical Anatomy. 30:114-119
Publication Year :
2016
Publisher :
Wiley, 2016.

Abstract

Introduction: Muscle strain of the gastrocnemius medial head mainly occurs at the musculotendinous junction (MTJ), and stiffness is a risk factor. Shear wave elastography (SWE) measures elasticity by determining the propagation velocity. The aim of this study was to measure the elasticity of the normal muscle and aponeurosis in the MTJ of the gastrocnemius medial head using SWE, thus obtaining information relevant to muscle strain at this point. Materials and Methods: Forty-one volunteers (82 legs) were recruited and the gastrocnemius medial heads were examined at four points: three on the aponeurosis, namely at the center of the MTJ (Central), 10 mm proximal to it (Proximal) and 10 mm distal to it (Distal); and at one on the muscle belly (Muscle). The measurements were compared among the points, between males and females, and between younger and middle-aged subjects. Correlations between the elastic modulus and age were also examined. Results: The elastic moduli at Proximal, Central, Distal, and Muscle were 2.82 ± 0.53 m/s, 3.43 ± 0.83 m/s, 4.83 ± 1.56 m/s, and 2.25 ± 0.43 m/s, respectively. These values differed significantly among the points of the aponeurosis, Distal having the highest modulus followed by Central. The elastic moduli were significantly greater in males than females at Distal and Muscle and in younger subjects than middle-aged subjects at Muscle. No significant correlations between elastic modulus and age were observed for any point. Conclusions: SWE could be a feasible method for quantifying the elasticity of muscle and aponeurosis in the MTJ of the gastrocnemius medial head. This article is protected by copyright. All rights reserved.

Details

ISSN :
08973806
Volume :
30
Database :
OpenAIRE
Journal :
Clinical Anatomy
Accession number :
edsair.doi...........c39b4df7d28893d35f28e35ce318cc18
Full Text :
https://doi.org/10.1002/ca.22788