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Repeatability of ultrasonographic median nerve measures

Impink, BG and Gagnon, D and Collinger, JL and Boninger, ML (2010) Repeatability of ultrasonographic median nerve measures. Muscle and Nerve, 41 (6). 767 - 773. ISSN 0148-639X

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In this study we investigated the reliability of ultrasound in measuring median nerve characteristics including cross-sectional area (CSA), flattening ratio (FR), swelling ratio (SR), and mean grayscale. Generalizability theory was used to assess inter- and intrarater reliability using the dependability coefficient (Φ), normalized standard error of measurement, and normalized minimum detectable change (MDCNORM) for multiple study design protocols. Interrater reliability was generally moderate. Intrarater reliability was mostly good (Φ > 0.876) when using a single image, captured on one occasion, and being read once. Intrarater MDCNORM ranged from 3.8% to 6.2% for all CSA measures and SR. Using multiple images and/or readings at multiple occasions did not appreciably improve reliability measures. Ultrasound is a reliable tool for measuring median nerve characteristics. We recommend that a single evaluator capture all images for protocols aimed at quantifying median nerve ultrasound measures. We believe an appropriately designed protocol can utilize ultrasound to accurately assess changes in median nerve characteristics after activity. © 2010 Wiley Periodicals, Inc.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Impink, BG
Gagnon, D
Collinger, JLcollinger@pitt.eduCOLLINGR
Boninger, MLboninger@pitt.eduBONINGER
Centers: Other Centers, Institutes, Offices, or Units > Human Engineering Research Laboratories
Date: 1 June 2010
Date Type: Publication
Journal or Publication Title: Muscle and Nerve
Volume: 41
Number: 6
Page Range: 767 - 773
DOI or Unique Handle: 10.1002/mus.21619
Schools and Programs: School of Health and Rehabilitation Sciences > Rehabilitation Science and Technology
Refereed: Yes
ISSN: 0148-639X
MeSH Headings: Adult; Carpal Tunnel Syndrome--epidemiology; Carpal Tunnel Syndrome--physiopathology; Carpal Tunnel Syndrome--ultrasonography; Female; Hamate Bone--ultrasonography; Humans; Image Enhancement; Male; Median Nerve--ultrasonography; Middle Aged; Pisiform Bone--ultrasonography; Radius--ultrasonography; Reference Values; Reproducibility of Results; Wheelchairs--adverse effects
PubMed ID: 20513104
Date Deposited: 03 Oct 2012 21:41
Last Modified: 22 Jun 2021 14:55


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