Hyperexcitability of cervical motor neurons during neck flexion in patients with Hirayama disease.
Electromyogr Clin Neurophysiol
; 40(1): 11-5, 2000.
Article
in En
| MEDLINE
| ID: mdl-10782352
ABSTRACT
We recorded the motor evoked potentials (MEPs) from the affected thenar muscles during neck flexion in 4 patients in the early progressive phase of Hirayama disease. The MEP size significantly increased during neck flexion in patients compared with normal controls. In 2 patients who were treated with a neck collar, the intrinsic muscle atrophy gradually recovered together with increased grip power, and the time course of changes in MEP during neck flexion became normal after treatment with a neck collar for 7-16 months. The technique described here would be useful for evaluating the vulnerability of cervical motor neurons and the therapeutic effect of the neck collar in Hirayama disease.
Search on Google
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Spinal Muscular Atrophies of Childhood
/
Evoked Potentials, Motor
/
Motor Neurons
/
Neck
Type of study:
Observational_studies
/
Prognostic_studies
Limits:
Adolescent
/
Adult
/
Humans
/
Male
Language:
En
Journal:
Electromyogr Clin Neurophysiol
Year:
2000
Document type:
Article
Affiliation country:
Japón