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Journal of the Korean Academy of Rehabilitation Medicine 1990;14(1):20.
Radial Sensory Innervation to Index and Middle Finger Electrodiagnostic Considerations
Keun Sik Yu, M.D. , Yang Gyun Lee, M.D.
Department of Rehabilitation Medicine, College of Medicine, Soon Chun Hyang University
시지와 중지에서 요골감각신경 분포에 대한 전기생리학적 관찰
유근식, 이양균
순천향의과대학 재활의학교실
Abstract

Antidromic radial and median compound sensory nerve action potentials (CSNAP) were recorded from the index and middle fingers in 30 subjects, Eighty percent subjects had radial CSNAPs at the base of index finger, and had thirteen percent subjects at the base of middle finger. Sudden reduction was showed radial CSNAPs amplitude was small size and wide variability among individuals, Radial CSNAPs from index and middle fingers seem to have limited direct clinical utility, Contamination of median CSNAPs by radial CSNAPs is negligible or absent (when there is unavoidable spread of the stimulus to the radial nerve), if median sensory responses are recorded from the distal half (exept for PIP joint) of the index or middle finger.

Key Words: Radial contamination, Radial and median CSNAPs, Radial contamination
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