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  • Title: Evaluation of cervical radiculopathy by cervical root stimulation.
    Author: Tsai CP, Huang CI, Wang V, Lin KP, Liao KK, Yen DJ, Wu ZA.
    Journal: Electromyogr Clin Neurophysiol; 1994 Sep; 34(6):363-6. PubMed ID: 8001478.
    Abstract:
    For precise evaluation of cervical radiculopathy, cervical root stimulation (CRS), conventional electromyographic (EMG) studies, nerve conduction velocity (NCV) studies and F responses were done in 32 patients with clinical symptoms and signs of cervical radiculopathy. While performing CRS, a monopolar needle was inserted into the paraspinal muscles, and the compound muscle action potentials (CMAPs) in the biceps, triceps and abductor digiti minimi muscles were recorded. Conventional EMG was abnormal in 18 (56.2%), whereas CRS was abnormal in 25 (78.1%). Among the 25 patients with positive CRS tests, 13 received surgical decompression for cervical root compression caused either by a cervical disc or by foramen narrowing due to spondylosis. Only 10 out of 13 (76.9%) had abnormal conventional EMG findings. CRS provides a sensitive method for making a direct evaluation of proximal root conduction and is a good aid for pre-surgical evaluation of cervical radiculopathy.
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