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Published on: June 2, 2014
The anatomy and physiology of the vertebral nerve in relation to cervical migraine
N Bogduk1, G A Lambert, J W Duckworth
1Department of Neurology, Prince Henry Hospital, Little Bay 2036, New South Wales, Australia.
Abstract:
The anatomy of the vertebral nerve was investigated in humans and in monkeys. The effect of stimulation of the vertebral nerve and the cervical sympathetic trunk in the monkey was studied. The vertebral nerves in man and monkey represent a series of deep grey rami communicantes which form intersegmental neural arcades around the vertebral artery between C7 and C3. Above C3 the vertebral artery is accompanied by direct branches from the C1-3 ventral rami. Electrical stimulation of either the vertebral nerve or the cervical sympathetic trunk had a minimal effect on vertebral blood flow. In contrast, sympathetic stimulation had pronounced effects on carotid flow and resistance. Anatomically and physiologically there are no grounds to support the hypothesis that irritation of the "vertebral nerve" is the pathogenetic mechanism of cervical migraine.
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