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Wrist – Digit II, Wrist – Digit V

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

Original Settings

Sensitivity was 20 μV/division, sweep speed was 2 ms/division, duration of pulse was 0.1–0.4 ms, and the machine used was a Tektronix electromyograph. Low-frequency filter, high-frequency filter, and rate of pulse were not specified.

Position

This study was performed in the supine position.

Recording

Following the antidromic method [ 1], signals were recorded using surface electrodes from the median and ulnar nerves separately (Fig. 1). For the median nerve (R1), the active recording electrode (A) was placed around the proximal interphalangeal joint of digit II; the reference electrode (R) was placed over the distal interphalangeal joint of digit II. For the ulnar nerve (R2), the active recording electrode (A) was placed around the proximal interphalangeal joint of digit V; the reference electrode (R) was placed over the distal interphalangeal joint of digit V. The proximal interphalangeal joint rather than the base of the finger was selected as the site for the...

References

  1. 1.
    Felsenthal G (1978) Comparison of evoked potentials in same hand in normal subjects and patients with carpal tunnel syndrome. Am J Phys Med Rehabil 57:228–232Google Scholar
  2. 2.
    Felsenthal G (1977) Median and ulnar distal motor and sensory latencies in the same normal subjects. Arch Phys Med Rehabil 58:297–302PubMedGoogle Scholar
  3. 3.
    Loong SC, Seah CS (1971) Comparison of median and ulnar sensory nerve action potentials in the diagnosis of the carpal tunnel syndrome. J Neurol Neurosurg Psychiatry 34:750–754PubMedCentralPubMedCrossRefGoogle Scholar
  4. 4.
    Bolton CF, Carter KM (1980) Human sensory nerve compound action potential amplitude: variation with sex and finger circumference. J Neurol Neurosurg Psychiatry 43:925–928PubMedCentralPubMedCrossRefGoogle Scholar
  5. 5.
    Monga TN, Laidlow DM (1982) Carpal tunnel syndrome measurement of sensory potentials using ring and index fingers. Am J Phys Med Rehabil 61:123–129Google Scholar
  6. 6.
    Jackson DA, Clifford JC (1989) Electrodiagnosis of mild carpal tunnel syndrome. Arch Phys Med Rehabil 70:199–204PubMedGoogle Scholar
  7. 7.
    Aygül R, Ulvi H, Kotan D et al (2009) Sensitivities of conventional and new electrophysiological techniques in carpal tunnel syndrome and their relationship to body mass index. J Brachial Plex Peripher Nerve Inj 4:12PubMedCentralPubMedCrossRefGoogle Scholar
  8. 8.
    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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