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Wrist, Palm – Digits II, V

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

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. 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 (Fig. 1). For the ulnar nerve (R1), 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 (Fig. 2). Adjacent digits were kept from inadvertently contacting each other. Ground (G) was placed on the...

References

  1. 1.
    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
  2. 2.
    Andary MT, Fankhauser MJ, Ritson JL et al (1996) Comparison of sensory mid-palm studies to other techniques in carpal tunnel syndrome. Electromyogr Clin Neurophysiol 36:279–285PubMedGoogle Scholar
  3. 3.
    Buschbacher RM (1999) Median 14-cm and 7 cm antidromic sensory studies to digits two and three. Am J Phys Med Rehabil 78:S53–S62Google Scholar
  4. 4.
    Buschbacher RM (1999) Ulnar 14 cm and 7 cm antidromic sensory studies to the fifth digit: reference values derived from a large population of normal subjects. Am J Phys Med Rehabil 78:S63–S68Google Scholar
  5. 5.
    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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