Wrist, Palm – Digit III

Surface Recording Technique, Antidromic Study
  • Giuliano Gentili
  • Mario Di Napoli

Original Settings

Sensitivity was 10 μV/division, low-frequency filter was 32-Hz, high-frequency filter was 8 kHz, sweep speed was 2 ms/division, and duration of pulse was 0.2 ms. Rate of pulse and the machine used were not specified.


This study was performed in the supine position.


Following the antidromic method [ 1], signals were recorded using ring electrodes at digit III (Fig. 1). The active recording electrode (A) was placed on the first interphalangeal joint of digit III (middle finger), 9 cm from the stimulating cathode (−) at midpalm level (S2) along a line pointing to the midline of the distal wrist crease. The reference electrode (R) was positioned 2 cm distally on the second interphalangeal joint of digit III. Ground (G) was placed on the dorsum of the hand (the figure shows the ground electrode placed on the palm).


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  1. 1.
    Tackmann W, Kaeser HE, Magun HG (1981) Comparison of orthodromic and antidromic sensory nerve conduction velocity measurements in the carpal tunnel syndrome. J Neurol 224:257–266PubMedCrossRefGoogle Scholar
  2. 2.
    Buchthal F, Rosenfalck A (1971) Sensory conduction from digit to palm and from palm to wrist in the carpal tunnel syndrome. J Neurol Neurosurg Psychiatry 34:243–252PubMedCentralPubMedCrossRefGoogle Scholar
  3. 3.
    Bland JDP (2000) A neurophysiological grading scale for carpal tunnel syndrome. Muscle Nerve 23:1280–1283PubMedCrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Giuliano Gentili
    • 1
  • Mario Di Napoli
    • 1
  1. 1.Neurological ServiceS. Camillo de’ Lellis General HospitalRietiItaly

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