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Elbow – Wrist

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

Original Settings

Sensitivity was 20 μV/division, low-frequency filter was 20 Hz, high-frequency filter was 10 kHz, sweep speed was 1 ms/division, and the machine used was a TECA (model was not specified). Duration and rate of pulse were not specified.

Position

This study was performed in the supine position, with the elbow and fingers slightly flexed.

Recording

Following the antidromic method [ 1], signals were recorded distally from the elbow at the wrist (R). A pair of 8-mm disc surface electrodes was placed proximal to the wrist crease; the active recording electrode (A) was placed 4 cm proximal to the wrist crease (Fig. 1). The ground (G) electrode position was not specified; it can be placed over the skin of the forearm (between the stimulating and the recording electrodes) or on the dorsum of the hand (the figure shows the ground electrode placed over the forearm).

References

  1. 1.
    Pease WS, Lee HH, Johnson EW (1990) Forearm median nerve conduction velocity in carpal tunnel syndrome. Electromyogr Clin Neurophysiol 30:299–302PubMedGoogle Scholar
  2. 2.
    Melvin JL, Schuchmann JA, Lanese RR (1973) Diagnostic specificity of motor and sensory nerve conduction variables in the carpal tunnel syndrome. Arch Phys Med Rehabil 54:69–74PubMedGoogle 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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