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Premotor potential study in carpal tunnel syndrome
Author(s) -
Kodama Mitsuhiko,
Sasao Yu,
Tochikura Michi,
Kasahara Takashi,
Koyama Yuji,
Aono Koji,
Fujii Chieko,
Hanayama Kozo,
Takahashi Osamu,
Kobayashi Yuka,
Masakado Yoshihisa
Publication year - 2012
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.23424
Subject(s) - carpal tunnel syndrome , median nerve , wrist , medicine , nerve conduction velocity , sensory nerve , compound muscle action potential , nerve conduction study , nerve conduction , carpal tunnel , sensory system , physical medicine and rehabilitation , anatomy , electrophysiology , surgery , neuroscience , psychology
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. Muscle Nerve, 2012