Bone is so complex and experiences so much movement, it is very prone to injury
The small spongy discs that cushion the bones (or vertebrae) that form the spine are called “discs.” They act as shock absorbers for the spine, keeping it flexible. A disc that bulges or breaks is called a herniated, slipped, or ruptured disc. www.cervicalspinesurgeon.com/services/herniated-disc-repair.html