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KMID : 0861220100120010016
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Journal of the Korean Society Clinical Neurophysiology
2010 Volume.12 No. 1 p.16 ~ p.20
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Medial Plantar Sensory Nerve Conduction Studies in Diabetics: Comparision of Three Different Methods
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Kwon Hyuk-Hwan
Lee Dong-Kuck
Seok Jung-Im
Han Woo-Ho
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Abstract
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Background:The medial plantar nerve (MPN) is a distal branch of the posterior tibial nerve, and various methods of nerve conduction study for MPN have been introduced so far. Hemmi et al described a new method (Hemmi’s method) for recording medial plantar sensory nerve action potentials (SNAPs), which is considered as a simple and reliable method for measuring medial plantar SNAPs. This study was aimed to establish the normal values for the MPN conduction study among Koreans and to compare the sensitivities of three different methods for MPN conduction study (Hemmi, Oh, and Saeed’s method) in detecting evidence of peripheral neuropathy among diabetic patients.
Methods: In 27 healthy subjects, MPN conduction study using Hemmi’s method was performed and normal values were calculated. In 54 diabetic patients who showed normal routine nerve conduction studies, three different methods for MPN conduction study were performed and diagnostic sensitivity of each method were compared.
Results: In normal subjects, the mean medial plantar SNAP amplitude and conduction velocities measured by Hemmi’s method were 4.3±1.0 uV and 38.3±6.8 m/s respectively. Among 54 patients with diabetes who showed normal routine nerve conduction studies, medial plantar SNAP was not obtainable in 28, 31, and 6 patients by Hemmi, Oh and Saeed’s method respectively.
Conclusions : In terms of the diagnostic sensitivity for detecting diabetic neuropathy, there had been no significant statistical difference between three different methods. Our study suggested that MPN conduction study using Hemmi’s method is simple and useful screening test for early diabetic neuropathy, and is comparable with Oh’s method.
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KEYWORD
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Diabetes mellitus, Medial plantar nerve, Sensory nerve conduction studies
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