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Ultrasound Med Biol. 2015 Sep;41(9):2284-91. doi: 10.1016/j.ultrasmedbio.2015.04.020. Epub 2015 Jun 27.

Reliable protocol for shear wave elastography of lower limb muscles at rest and during passive stretching.

Author information

1
LBM/Institut de Biomécanique Humaine Georges Charpark, Arts et Métiers ParisTech, 151 Boulevard de l'Hôpital, Paris 75013, France. Electronic address: guillaume.dubois@ensam.eu.
2
LBM/Institut de Biomécanique Humaine Georges Charpark, Arts et Métiers ParisTech, 151 Boulevard de l'Hôpital, Paris 75013, France.
3
LBM/Institut de Biomécanique Humaine Georges Charpark, Arts et Métiers ParisTech, 151 Boulevard de l'Hôpital, Paris 75013, France; Universite Paris XIII, Paris, France.
4
Institut Langevin, Laboratoire Ondes et Acoustique, CNRS UMR 7587, ESPCI ParisTech, PSL, INSERM ERL U979, Paris, France.

Abstract

Development of shear wave elastography gave access to non-invasive muscle stiffness assessment in vivo. The aim of the present study was to define a measurement protocol to be used in clinical routine for quantifying the shear modulus of lower limb muscles. Four positions were defined to evaluate shear modulus in 10 healthy subjects: parallel to the fibers, in the anterior and posterior aspects of the lower limb, at rest and during passive stretching. Reliability was first evaluated on two muscles by three operators; these measurements were repeated six times. Then, measurement reliability was compared in 11 muscles by two operators; these measurements were repeated three times. Reproducibility of shear modulus was 0.48 kPa and repeatability was 0.41 kPa, with all muscles pooled. Position did not significantly influence reliability. Shear wave elastography appeared to be an appropriate and reliable tool to evaluate the shear modulus of lower limb muscles with the proposed protocol.

KEYWORDS:

Elastography; Lower limb; Muscle; Reliability; Shear modulus

[Indexed for MEDLINE]

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