J Korean Acad Rehabil Med.  1999 Dec;23(6):1207-1212.

Sternocleidomastoid Tendon Reflex in Normal Korean Adults

Affiliations
  • 1Department of Rehabilitation Medicine, Gachon Medical School.
  • 2Department of Rehabilitation Medicine, Pundang Jesaeng General Hospital.
  • 3Department of Rehabilitation Medicine, Keimyung University College of Medicine.

Abstract

OBJECT: The purpose of this study was to establish the normal values of sternocleidomastoid (SCM) tendon reflex in normal Korean adults. METHOD: The study for SCM tendon reflex was performed in 41 normal adults using electric reflex hammer. The compound muscle action potentials (CMAP) of SCM muscle were obtained by SCM tendon tapping. From 5 repeated trials of each subject, the shortest latency and the largest peak-to-peak amplitude of CMAP were chosen for the representative value.
RESULTS
Mean values of latency and amplitude were 2.19+/-0.27 msec and 0.70+/-0.38 mV for SCM tendon reflex. There was no significant difference in the latency and amplitude regardless of side or sex (p>0.05). The age and height showed no signifiant correlation with latency and amplitude of SCM tendon reflex (p>0.05).
CONCLUSION
We believe that our results can be used as an evaluation method of upper cervical spinal cord.

Keyword

Sternocleidomastoid tendon reflex; Electric reflex hammer

MeSH Terms

Action Potentials
Adult*
Humans
Reference Values
Reflex
Reflex, Stretch*
Spinal Cord
Tendons*
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