Spinal canal block caused by central disc protrusion.
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009192:Myelography; D013115:Spinal Canal