Digit II, Palm – Wrist; Digit V – Wrist
Surface Recording Technique, Orthodromic Study
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The machine used was a TECA TE-4. Sensitivity, low-frequency filter, high-frequency filter, sweep speed, duration of pulse, and rate of pulse were not specified.
This study was performed in the supine position.
Following the orthodromic method [ 1], signals were recorded using surface electrodes at the wrist from the median nerve (R1) by stimulation of digit II (S1) and stimulation of the palmar branches (S2) of the median nerve (Fig. 1). Signals from the ulnar nerve were recorded at the wrist (R1) by stimulation of digit V (Fig. 2). For the median nerve (R1), electrodes were placed between the tendons of the flexor carpi radialis (FCR) and the palmaris longus(PL) muscles (ideally proximal to the distal wrist crease). From the cathode stimulating points (−), the proximal distance of 14 cm for the digit II–wrist and 8 cm for the palm–wrist was premeasured and marked over the median nerve as appropriate. These points were the sites for fixing the...
KeywordsDigital Nerve Conduction Studies (NCS) Median Nerve Electromyography (EMG) Public Health
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- 2.Felsenthal G, Spindler H (1979) Palmar conduction time of median and ulnar nerves of normal subjects and patients with carpal tunnel syndrome. Am J Phys Med Rehabil 58:131–138Google Scholar
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