Premotor potential study in carpal tunnel syndrome.

Abstract:

INTRODUCTION:Premotor potentials (PMPs) precede compound muscle action potentials evoked from the second lumbrical muscle after median nerve stimulation. Although PMP has been identified as a median sensory nerve action potential, few reports have documented the significance of PMP parameters for diagnosing carpal tunnel syndrome (CTS). METHODS:We investigated the relationships between PMP parameters and results of 6 standard median nerve conduction studies in 74 CTS hands. RESULTS:Significant correlations were noted in all comparisons. PMP conduction velocity was strongly correlated with the sensory conduction velocity between wrist and digit 2 (r(2) = 0.91). Moreover, PMP parameters were significantly correlated with neurophysiological severity of CTS. CONCLUSION:Measuring PMP parameters with a second lumbrical-interosseous study may be useful for diagnosing CTS.

journal_name

Muscle Nerve

journal_title

Muscle & nerve

authors

Kodama M,Sasao Y,Tochikura M,Kasahara T,Koyama Y,Aono K,Fujii C,Hanayama K,Takahashi O,Kobayashi Y,Masakado Y

doi

10.1002/mus.23424

subject

Has Abstract

pub_date

2012-12-01 00:00:00

pages

879-84

issue

6

eissn

0148-639X

issn

1097-4598

journal_volume

46

pub_type

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