Carpal tunnel syndrome: Clinical, electrophysiological, and ultrasonographic ratio after surgery

Jun Yeon Kim, Joon Shik Yoon, Sei Joo Kim, Sun Jae Won, Jin Seok Jeong

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


Introduction: The aim of this study was to improve our understanding of the pathophysiology of carpal tunnel syndrome (CTS) and to highlight the ultrasonographic cross-sectional area (CSA) ratio as a tool for assessing outcomes by investigating postoperative changes. Methods: Twenty-four individuals with CTS were evaluated using the Boston questionnaire, nerve conduction studies, and ultrasound, preoperatively and at 3 weeks and 3 months postoperatively. Results: Improved symptom scores, decreased CSA, and decreased CSA ratio were observed in the first 3 weeks, but functional improvement was also observed after 3 weeks postoperatively. The ratios between the CSA at the sites of enlargement and unaffected areas correlated significantly with the Padua classification, although the coefficient was not superior to the coefficient of CSA at the maximal swelling site. Conclusions: Symptoms improved more rapidly than function after surgery. Measurement of the ultrasonographic CSA ratio may provide clinicians with a useful assessment tool after surgery.

Original languageEnglish
Pages (from-to)183-188
Number of pages6
JournalMuscle and Nerve
Issue number2
Publication statusPublished - 2012 Feb
Externally publishedYes


  • After surgery
  • Assessment tool
  • Carpal tunnel syndrome
  • Pathophysiology
  • Ultrasonographic ratio

ASJC Scopus subject areas

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


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