Digit II, Palm – Wrist; Digit V – Wrist

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

Original Settings

The machine used was a TECA TE-4. 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 using surface electrodes at the wrist from the median nerve (R1) by stimulation of digit II (S1) and stimulation of the palmar branches (S2) of the median nerve (Fig. 1). Signals from the ulnar nerve were recorded at the wrist (R1) by stimulation of digit V (Fig. 2). For the median nerve (R1), electrodes were placed between the tendons of the flexor carpi radialis (FCR) and the palmaris longus(PL) muscles (ideally proximal to the distal wrist crease). From the cathode stimulating points (−), the proximal distance of 14 cm for the digit II–wrist and 8 cm for the palm–wrist was premeasured and marked over the median nerve as appropriate. These points were the sites for fixing the...


Digital Nerve Conduction Studies (NCS) Median Nerve Electromyography (EMG) Public Health 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. 1.
    Monga TN, Shanks GL, Poole BJ (1985) Sensory palmar stimulation in the diagnosis of carpal tunnel syndrome. Arch Phys Med Rehabil 66:598–600PubMedGoogle Scholar
  2. 2.
    Felsenthal G, Spindler H (1979) Palmar conduction time of median and ulnar nerves of normal subjects and patients with carpal tunnel syndrome. Am J Phys Med Rehabil 58:131–138Google Scholar
  3. 3.
    Bland JDP (2000) A neurophysiological grading scale for carpal tunnel syndrome. Muscle Nerve 23:1280–1283PubMedCrossRefGoogle Scholar
  4. 4.
    Jackson DA, Clifford JC (1989) Electrodiagnosis of mild carpal tunnel syndrome. Arch Phys Med Rehabil 70:199–204PubMedGoogle Scholar
  5. 5.
    Eklund G (1975) A new electrodiagnostic procedure for measuring sensory nerve conduction across the carpal tunnel. Ups J Med Sci 80:63–64PubMedCrossRefGoogle 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

Personalised recommendations