Abstract
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 fibers. 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.
Original language | English |
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Pages (from-to) | 18-23 |
Number of pages | 6 |
Journal | Electroencephalography and Clinical Neurophysiology - Evoked Potentials |
Volume | 81 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1991 |
Keywords
- Carpal tunnel syndrome
- Conduction velocity
- Median nerve
- Sensory conduction
- Ulnar nerve
ASJC Scopus subject areas
- Clinical Neurology
- Neuroscience(all)