Electromyography and clinical neurophysiology
-
Electromyogr Clin Neurophysiol · Sep 2005
Quantitative motor unit action potentials (QMUAP) in whiplash patients with neck and upper-limb pain.
Needle EMG studies in patients with whiplash symptoms to document presence of neural injury, such as cervical radiculopathy, are not available. ⋯ QEMG changes suggest neural injury in symptomatic side C6 and C7 innervated muscles, even in the absence of spontaneous activity. In acute and chronic pain patients a higher percentage of polyphasic MUAPs is noted in the symptomatic side C6 muscle. In chronic pain patients higher MUAP frequencies are noted in the symptomatic side C6 muscle.