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Ratio of the Cross Sectional Area of Median Nerve to Ulnar Nerve in Diagnosing Carpal Tunnel Syndrome

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03033173
Recruitment Status : Completed
First Posted : January 26, 2017
Last Update Posted : January 26, 2017
Information provided by (Responsible Party):
Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation

Brief Summary:
An innovative diagnostic ultrasound method for carpal tunnel syndrome was proposed and compared between carpal tunnel syndrome patients and healthy volunteers.

Condition or disease
An Innovative Diagnostic Method for Carpal Tunnel Syndrome

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Study Type : Observational
Actual Enrollment : 74 participants
Observational Model: Case-Control
Time Perspective: Cross-Sectional
Actual Study Start Date : January 2013
Actual Primary Completion Date : December 2014
Actual Study Completion Date : December 2014

CTS group
Healthy subjects

Primary Outcome Measures :
  1. Sonographical findings between hands with CTS and healthy hands [ Time Frame: Within one week after ultrasound examination ]

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Ages Eligible for Study:   20 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population

CTS patients were recruited from the Physical Medicine and Rehabilitation Department of Taipei Tzu Chi hospital.

Healthy subjects were recruited from hospital staff, health volunteers and their friends.


Inclusion Criteria:

  • CTS patients were required to have subjective symptoms of numbness, tingling pain, or dysesthesia over the median nerve innervated area of the involved hand.
  • Patients should have positive response in either Tinel's test or Phalen's test during physical examination
  • Evidence of median neuropathy at wrist level in NCS.
  • Control subjects should have neither symptoms nor signs of CTS along with no abnormal findings in electrodiagnostic study of the median nerve and the ulnar nerve across the wrist joint.

Exclusion Criteria:

  • Age younger than 20 years old
  • Electrodiagnostic evidence of ulnar neuropathy at the wrist level
  • Previous trauma or surgery history of hand
  • Medical history of hypothyroidism, diabetes mellitus, uremia, rheumatoid arthritis, amyloidosis, and acromegaly
  • Pregnancy
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation Identifier: NCT03033173    
Other Study ID Numbers: TCRD-TPE-102-05
First Posted: January 26, 2017    Key Record Dates
Last Update Posted: January 26, 2017
Last Verified: January 2017
Additional relevant MeSH terms:
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Carpal Tunnel Syndrome
Pathologic Processes
Median Neuropathy
Peripheral Nervous System Diseases
Neuromuscular Diseases
Nervous System Diseases
Nerve Compression Syndromes
Cumulative Trauma Disorders
Sprains and Strains
Wounds and Injuries