Spinal cord compression due to prolapse of cervical intervertebral disc (herniation of nucleus pulposus)

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Abstract
Twenty-six patients who presented with spinal cord compression due to cervical disc prolapse (herniation of the nucleus pulposus) were treated by anterior discectomy. There was a high incidence of disc prolapse at the C3-4 level. The most severe degrees of preoperative disability were associated with prolapse at that level. Impairment of posterior column function, particularly in the upper limbs, played a major part in producing disability. High cervical disc prolapse can produce a clinical picture that is predominantly like that of a posterior cord syndrome. Preexisting fusion of vertebral bodies in the cervical spine and a history of cervical spinal trauma appear to be predisposing factors. Discectomy is an effective treatment of this condition. Spinal cord compression due to cervical disc prolapse should be distinguished from spondylotic myelopathy.