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Degeneration of cervical IVD and the secondary degeneration of cervical intervertebral joints, leads to injury of spinal cord, nerve roots and vertebral artery, and shows corresponding symptoms and signs
acute injury can further injure originally degenerative cervical vertebra and discs, this can induce cervical spondylosis.
Chronic injury can speed up process of degeneration.
stenosis of the cervical spinal canal.