Four cases of ruptured cervical intervertebral discs are presented which, following a single traumatic episode or multiple recurrent injuries, showed symptoms and signs of the chronic anterior cervical spinal-cord injury or compression syndrome. These lesions were diagnosed as amyotrophic lateral sclerosis, spinal-cord tumor, acute myelitis, and spinal-cord compression due to hrypertrophic arthritic spur. Earlier recognition and treatment would undoubtedly have prevented neurological disability.