Influence of limb position on assessment of nerve mechanical properties by using shear wave ultrasound elastography

Chelsea L. Rugel*, Colin K. Franz, Sabrina S.M. Lee

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Introduction: Evaluation of nerve mechanical properties has the potential to improve assessment of nerve impairment. Shear wave velocity, as measured by using shear wave (SW) ultrasound elastography, is a promising indicator of nerve mechanical properties such as stiffness. However, elucidation of external factors that influence SW velocity, particularly nerve tension, is required for accurate interpretations. Methods: Median and ulnar nerve SW velocities were measured at proximal and distal locations with limb positions that indirectly altered nerve tension. Results: Shear wave velocity was greater at proximal and distal locations for limb positions that induced greater tension in the median (mean increase proximal 89.3%, distal 64%) and ulnar (mean increase proximal 91.1%, distal 37.4%) nerves. Discussion: Due to the influence of nerve tension when SW ultrasound elastography is used, careful consideration must be given to limb positioning.

Original languageEnglish (US)
Pages (from-to)616-622
Number of pages7
JournalMuscle and Nerve
Volume61
Issue number5
DOIs
StatePublished - May 1 2020

Keywords

  • mechanical properties
  • nerve cross-sectional area
  • neuromuscular ultrasound
  • peripheral nerve
  • shear wave ultrasound elastography
  • tension

ASJC Scopus subject areas

  • Physiology
  • Clinical Neurology
  • Cellular and Molecular Neuroscience
  • Physiology (medical)

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