Comparing Shape Categorization to Circularity Measurement in the Evaluation of Median Nerve Compression Using Sonography
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Comparing Shape Categorization to Circularity Measurement in the Evaluation of Median Nerve Compression Using Sonography
  • Published Date:

    January 08 2020

  • Source:
    J Diagn Med Sonogr. 2020
  • Language:
    English
Filetype[PDF-828.52 KB]


Details:
  • Alternative Title:
    J Diagn Med Sonogr
  • Personal Author:
  • Description:
    Purpose This study aimed to develop a subjective categorization of nerve shape and to examine the relationship of shape categorizations to measurement of nerve circularity. Methods Wrists were evaluated with sonography in healthy participants. Images of the median nerve were obtained in the transverse plane at the level of pisiform with the fingers resting, gripping, and pinching. Nerves were categorized as ovoid, angular, or irregular, and the cross-sectional area and perimeter were measured to calculate nerve circularity. Results Across 167 participants, the median nerve shifted from being primarily ovoid at rest to angular shaped when the fingers were in a full fist or pinching. Approximately three-quarters of subjects exhibited a shape change during dynamic movement. Irregular nerves had the lowest circularity values; however, the majority of nerves had similar circularity measures despite having different shapes. Conclusions Subjective categorization of shape has the potential to be a valid technique for evaluation of the median nerve using sonography, and this evaluation may provide additional information regarding nerve compression that is not fully captured by a circularity measure. Further investigation is needed to determine how these two techniques may be best used individually or together to advance clinical diagnosis, prevention, and rehabilitative interventions.
  • Subject:
  • Pubmed ID:
    32064465
  • Pubmed Central ID:
    PMC7020616
  • Document Type:
    Journal Article
  • Funding:
    R01 OH010665/OH/NIOSH CDC HHS/United States
  • Collection(s):
    CDC Public Access
  • Main Document Checksum:
  • File Type:
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