Document Detail

Orthodromic sensory conduction along the ring finger in normal subjects and in patients with a carpal tunnel syndrome.
MedLine Citation:
PMID:  1705215     Owner:  NLM     Status:  MEDLINE    
The purpose of the present study was to examine the value of measuring sensory conduction along the median and ulnar nerves of the fourth finger in the diagnosis of a carpal tunnel syndrome (CTS). In 23 controls, sensory conductions along median and ulnar nerves were identical. In 28 of 38 patients with CTS, stimulation of the ring finger revealed a reduced conduction velocity along sensory median nerve fibres in contrast to normal conduction along ulnar sensory nerve fibres. In 5 patients, a sensory action potential was absent over the median nerve and in another 5 sensory conduction was normal along both nerves. We conclude that testing of sensory conduction along the ring finger is useful in about 74% of patients with CTS, while in the remaining 26% other fingers must be examined to establish the diagnosis.
M Lauritzen; R Liguori; W Trojaborg
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Electroencephalography and clinical neurophysiology     Volume:  81     ISSN:  0013-4694     ISO Abbreviation:  Electroencephalogr Clin Neurophysiol     Publication Date:  1991 Feb 
Date Detail:
Created Date:  1991-04-02     Completed Date:  1991-04-02     Revised Date:  2008-09-09    
Medline Journal Info:
Nlm Unique ID:  0375035     Medline TA:  Electroencephalogr Clin Neurophysiol     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  18-23     Citation Subset:  IM    
Laboratory of Clinical Neurophysiology, Rigshospitalet, Copenhagen, Denmark.
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MeSH Terms
Carpal Tunnel Syndrome / physiopathology*
Fingers / innervation*
Median Nerve / physiopathology
Middle Aged
Muscles / physiopathology
Neural Conduction*
Reaction Time
Reference Values
Sensation / physiology*
Ulnar Nerve / physiopathology

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