Quantified mechanical properties of the deltoid muscle using the shear wave elastography: Potential implications for reverse shoulder arthroplasty

Taku Hatta, Hugo Giambini, Koji Sukegawa, Yoshiaki Yamanaka, John W. Sperling, Scott P. Steinmann, Eiji Itoi, Kai Nan An

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The deltoid muscle plays a critical role in the biomechanics of shoulders undergoing reverse shoulder arthroplasty (RSA). However, both pre- and postoperative assessment of the deltoid muscle quality still remains challenging. The purposes of this study were to establish a novel methodology of shear wave elastography (SWE) to quantify the mechanical properties of the deltoid muscle, and to investigate the reliability of this technique using cadaveric shoulders for the purpose of RSA. Eight fresh-frozen cadaveric shoulders were obtained. The deltoid muscles were divided into 5 segments (A1, A2, M, P1 and P2) according to the muscle fiber orientation and SWE values were measured for each segment. Intra- and inter-observer reliability was evaluated using intraclass correlation coefficient (ICC). To measure the response of muscle tension during RSA, the humeral shaft was osteotomized and subsequently elongated by an external fixator (intact to 15 mm elongation). SWE of the deltoid muscle was measured under each stretch condition. Intra- and inter-observer reliability of SWE measurements for all regions showed 0.761-0.963 and 0.718-0.947 for ICC(2,1). Especially, SWE measurements for segments A2 and M presented satisfactory repeatability. Elongated deltoid muscles by the external fixator showed a progressive increase in passive stiffness for all muscular segments. Especially, SWE outcomes of segments A2 and M reliably showed an exponential growth upon stretching (R2 = 0.558 and 0.593). Segmental measurements using SWE could be reliably and feasibly used to quantitatively assess the mechanical properties of the deltoid muscle, especially in the anterior and middle portions. This novel technique based on the anatomical features may provide helpful information of the deltoid muscle properties during treatment of RSA.

Original languageEnglish (US)
Article numbere0155102
JournalPLoS One
Volume11
Issue number5
DOIs
StatePublished - May 1 2016

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Deltoid Muscle
Elasticity Imaging Techniques
Arthroplasty
Shear waves
shoulders
shear stress
mechanical properties
Muscle
Mechanical properties
muscles
varespladib methyl
External Fixators
Bursitis
Muscle Tonus
Biomechanical Phenomena
Biomechanics
muscle fibers
repeatability
Fiber reinforced materials
Stretching

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Hatta, T., Giambini, H., Sukegawa, K., Yamanaka, Y., Sperling, J. W., Steinmann, S. P., ... An, K. N. (2016). Quantified mechanical properties of the deltoid muscle using the shear wave elastography: Potential implications for reverse shoulder arthroplasty. PLoS One, 11(5), [e0155102]. https://doi.org/10.1371/journal.pone.0155102

Quantified mechanical properties of the deltoid muscle using the shear wave elastography : Potential implications for reverse shoulder arthroplasty. / Hatta, Taku; Giambini, Hugo; Sukegawa, Koji; Yamanaka, Yoshiaki; Sperling, John W.; Steinmann, Scott P.; Itoi, Eiji; An, Kai Nan.

In: PLoS One, Vol. 11, No. 5, e0155102, 01.05.2016.

Research output: Contribution to journalArticle

Hatta, T, Giambini, H, Sukegawa, K, Yamanaka, Y, Sperling, JW, Steinmann, SP, Itoi, E & An, KN 2016, 'Quantified mechanical properties of the deltoid muscle using the shear wave elastography: Potential implications for reverse shoulder arthroplasty', PLoS One, vol. 11, no. 5, e0155102. https://doi.org/10.1371/journal.pone.0155102
Hatta, Taku ; Giambini, Hugo ; Sukegawa, Koji ; Yamanaka, Yoshiaki ; Sperling, John W. ; Steinmann, Scott P. ; Itoi, Eiji ; An, Kai Nan. / Quantified mechanical properties of the deltoid muscle using the shear wave elastography : Potential implications for reverse shoulder arthroplasty. In: PLoS One. 2016 ; Vol. 11, No. 5.
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