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Wrist, Palm – Digit III

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

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.

Position

This study was performed in the supine position.

Recording

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).

References

  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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