Comparison of sensory nerve conduction in the palmar cutaneous branch and first digital branch of the median nerve: a new diagnostic method for carpal tunnel syndrome

Comparison of sensory nerve conductions in palmar cutaneous branch (PCB) and digit I nerves was applied in 50 patients suspected of having carpal tunnel syndrome (CTS) and 40 healthy persons. The abnormalities were defined as the differences in latencies and sensory nerve conduction velocities (SNCV...

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Bibliographic Details
Published inMuscle & nerve Vol. 14; no. 12; p. 1173
Main Authors Chang, C W, Lien, I N
Format Journal Article
LanguageEnglish
Published United States 01.12.1991
Subjects
Adult
Carpal Tunnel Syndrome - diagnosis
Electromyography
Female
Fingers - innervation
Hand - innervation
Humans
Male
Median Nerve - physiopathology
Neural Conduction - physiology
Neurons, Afferent - physiology
Sensitivity and Specificity
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Summary:Comparison of sensory nerve conductions in palmar cutaneous branch (PCB) and digit I nerves was applied in 50 patients suspected of having carpal tunnel syndrome (CTS) and 40 healthy persons. The abnormalities were defined as the differences in latencies and sensory nerve conduction velocities (SNCVs) of more than mean plus 2.5 SD of controls. Comparing these 2 sensory nerves, statistical differences were seen in 83.7% (36 of 43 patients) of their sensory latencies and 76.7% (33 of 43 patients) of their SNCVs. This excluded 7 patients who had unobtainable sensory nerve action potentials in digit I nerves. This method may serve as an adjunctive technique in the diagnosis of CTS. Its diagnostic sensitivity was high in comparison with other testing methods.
ISSN:0148-639X
DOI:10.1002/mus.880141205