S-Space College of Medicine/School of Medicine (의과대학/대학원) Dept. of Neurology (신경과학교실) Journal Papers (저널논문_신경과학교실)
Clinical utility of trapezius muscle studies in the evaluation of amyotrophic lateral sclerosis
- Cho, Joong-Yang; Sung, Jung Joon; Min, Ju-Hong; Lee, Kwang-Woo
- Issue Date
- J Clin Neurosci 2006;13:908-12.
- Amyotrophic lateral sclerosis; Needle electromyography; Motor evoked potential; Upper trapezius
- Needle electromyography (EMG) and determining the motor evoked potential (MEP) of the genioglossus (tongue) are difficult to perform in evaluation of the craniobulbar region in patients with amyotrophic lateral sclerosis (ALS). Needle EMG and MEP determination in the upper trapezius were carried out in 17 consecutive ALS patients. The needle EMG parameters recorded included abnormal spontaneous activity and motor unit action potential morphology. An upper motor neuron lesion was presumed when either response to cortical stimulation was absent, or the central conduction time was delayed (>mean + 2 SD). Of the 12 patients with limb-onset ALS, using needle EMG, 11 were found to have abnormalities in the upper trapezius, and only five in the tongue. Three of the six patients with isolated limb involvement had abnormal MEP findings. In conclusion, electrophysiological studies of the upper trapezius are useful in ALS patients without bulbar symptoms.
- 0967-5868 (Print)
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