About the Spine
When we think about the spine, it appears like a long, marginally bendable section of bone. That couldn't possibly be more off-base. In fact, the spine is an accumulation of several bones that fit with each other, joined at each crossing point by discs that make a pad between the hard joints, and making an interlocking framework that makes adaptability conceivable.
The discs that pad every spinal bone are essential. They are safeguards that keep the bones able to move and allow them to become flexible.