Digit II, III, V – Wrist; Palm – Wrist

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

Original Settings

Low-frequency filter was 8 Hz, high-frequency filter was 3.2 kHz, duration of pulse was 0.1 ms, and rate of pulse was 1/s. Sensitivity, sweep speed, and the machine used were not specified.


This study was performed in the supine position.


Following the orthodromic method [ 1], the median and ulnar sensory nerve conduction studies were performed. Finger to wrist sensory nerve conduction study (Fig. 1) and palm to wrist sensory conduction study (Fig. 2) were done orthodromically at the wrist. The active electrode (A) was placed proximal to the distal crease at the wrist; the reference (R) was placed proximally. The authors used a standard plastic bar electrode (interelectrode distance was 3 cm) placed over the nerve at the wrist with the orientation of the two recording electrodes along the line of the nerve. For the median nerve (R1), electrodes were placed between the tendons of the flexor carpi radialis and the palmaris longusmuscles (ideally...


Digital Public Health Neurology 
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.
    Joynt RL (1989) Differences in sensory conduction velocity between different sensory branches and segments of the median and ulnar nerves. Am J Phys Med Rehabil 68:210–214PubMedCrossRefGoogle 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

Personalised recommendations