The spine is made up of a series of bones (vertebrae) stacked on top of each other, and between these bones are soft cushions called disks. These disks act as shock absorbers, helping the spine move and bend smoothly. Each disk has a soft center (nucleus pulposus) and a tougher outer layer (annulus fibrosus).
The spine is made up of a series of bones (vertebrae) stacked on top of each other, and between these bones are soft cushions called disks. These disks act as shock absorbers, helping the spine move and bend smoothly. Each disk has a soft center (nucleus pulposus) and a tougher outer layer (annulus fibrosus).