Standard median nerve ultrasound in carpal tunnel syndrome: A retrospective review of 1,021 cases.


Journal Article

Carpal tunnel syndrome (CTS) is diagnosed with electrodiagnostic (EDx) studies. Investigations have examined US cross sectional-area (CSA) and wrist to forearm ratio (WFR) cut-offs for screening EDx abnormalities in patients with suspected CTS. The objective of this study is to determine if these US parameters are effective in a real world population.This is a retrospective review of patients presenting to the Duke Electromyography (EMG) Laboratory during 2013-2014 with a final diagnosis of CTS. US diagnosis of CTS was based upon median nerve cross-sectional area of >9 mm2 and/or wrist-to-forearm ratio of >1.4. EDx studies were the gold standard for diagnosis.A total of 670 patients and 1,021 extremities were studied. US was positive in 97.6% of EDx confirmed CTS.Median nerve US is nearly as sensitive as the gold standard for EDx testing for the diagnosis of CTS.The data here suggest that US may have use as a screening tool prior to performing EDx testing for CTS.

Full Text

Duke Authors

Cited Authors

  • Billakota, S; Hobson-Webb, LD

Published Date

  • January 2017

Published In

Volume / Issue

  • 2 /

Start / End Page

  • 188 - 191

PubMed ID

  • 30214994

Pubmed Central ID

  • 30214994

Electronic International Standard Serial Number (EISSN)

  • 2467-981X

International Standard Serial Number (ISSN)

  • 2467-981X

Digital Object Identifier (DOI)

  • 10.1016/j.cnp.2017.07.004


  • eng