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Application of Ultrasound and Shear Wave Elastography Imaging in a Rat Model of NAFLD/NASH
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Quantifying cervical and axioscapular muscle stiffness using shear wave elastography.

Yanfei Xie1, Lucy Thomas1, François Hug2

  • 1School of Health and Rehabilitation Science, The University of Queensland, Australia.

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
|July 5, 2019
PubMed
Summary

Ultrasound shear wave elastography reliably measures superficial cervical and axioscapular muscle stiffness. Scapular position influences muscle stiffness, important for neck and shoulder pain research.

Keywords:
ElasticityMechanical propertiesScapular alignmentUltrasoundYoung’s modulus

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Area of Science:

  • Biomedical Engineering
  • Musculoskeletal Biomechanics
  • Diagnostic Ultrasound

Background:

  • Assessing cervical and axioscapular muscle stiffness is crucial for understanding neck and shoulder pain.
  • Ultrasound shear wave elastography (SWE) offers a non-invasive method to quantify tissue stiffness.
  • Reliability and influencing factors of SWE in these specific muscles require thorough investigation.

Purpose of the Study:

  • To evaluate the intra-rater reliability (intra-session and inter-day) of SWE for cervical and axioscapular muscles.
  • To determine the influence of side dominance and scapular resting position on muscle shear modulus.
  • To establish a foundation for future research on neck and shoulder musculoskeletal disorders.

Main Methods:

  • Sixteen healthy participants underwent bilateral SWE measurements of superficial and deep cervical extensor and axioscapular muscles.
  • Scapular resting position was clinically assessed bilaterally.
  • Testing was repeated on the dominant side on a separate day to assess inter-day reliability.

Main Results:

  • Good to excellent intra-session and inter-day reliability were observed for superficial muscle shear modulus.
  • Reliability for deep muscle shear modulus varied from poor to excellent.
  • Statistically significant, though clinically irrelevant, side differences were found for posterior upper trapezius shear modulus.
  • Posterior upper trapezius and middle trapezius shear modulus correlated significantly with scapular depression.

Conclusions:

  • Ultrasound shear wave elastography is a reliable tool for quantitatively assessing the stiffness of superficial cervical and axioscapular muscles.
  • Scapular resting position is a relevant factor that should be considered in comparative studies involving healthy individuals and patients with neck/shoulder pain.
  • This study provides essential data for future investigations into the stiffness of cervical and axioscapular muscles relevant to neck and shoulder musculoskeletal disorders.