Palm, Wrist – Elbow; Palm, Wrist, Elbow – Digit II

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

Original Settings

The machine used was a Nicolet Viking IV or Dantec Keypoint 4 electromyograph. 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 proximally at the elbow (R), just above the crease of the antecubital fossa and medial to the biceps tendon (Fig. 1). The authors used a pair of 1 cm diameter stainless steel disk electrodes. The reference electrode was proximal. Following the antidromic method [ 1], sensory nerve action potentials (SNAPs) were recorded to digit II (index finger) using saline-soaked Velcro ring electrodes (Fig. 2). The active recording (A) electrode was placed on the metacarpal joint; the reference (R) was placed distally, around the distal interphalangeal joint. The ground (G) electrode position was not specified (the figure shows the ground electrode...


  1. 1.
    Chang MH, Wei SJ, Chiang HL et al (2002) Does direct measurement of forearm mixed nerve conduction velocity reflect actual nerve conduction velocity through the carpal tunnel? Clin Neurophysiol 113:1236–1240PubMedCrossRefGoogle Scholar
  2. 2.
    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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