Wrist – Elbow; Palm – Wrist, Elbow

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

Original Settings

The machines used were a Nicolet Viking IV and a Dantec Key Point 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], for measurement of the direct forearm median mixed nerve amplitude and conduction velocity, 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. For the measurement of the derived forearm median mixed nerve conduction velocity, mixed responses were recorded at the wrist (R1), 8 cm proximal to the stimulating cathode, and proximally at the elbow (R2), just above the crease of the antecubital fossa and medial to the biceps tendon (Fig. 2). The reference (R) electrode was proximal. The ground (G)...


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    Chang MH, Lee YC, Hsieh PF (2008) The role of forearm mixed nerve conduction study in the evaluation of proximal conduction slowing in carpal tunnel syndrome. Clin Neurophysiol 119:2800–2803PubMedCrossRefGoogle Scholar
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    Hansson S (1994) Does forearm mixed nerve conduction velocity reflect retrograde changes in carpal tunnel syndrome? Muscle Nerve 17:725–729PubMedCrossRefGoogle Scholar
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    Pease WS, Lee HH, Johnson EW (1990) Forearm median nerve conduction velocity in carpal tunnel syndrome. Electromyogr Clin Neurophysiol 30:299–302PubMedGoogle Scholar
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    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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