The spine is an extremely complex part of your body. It contains 24 bones, and 5 of those bones are located in your lower back. It also has a large number of nerves and intervertebral discs that help with movement. Unfortunately, it is sometimes possible for these discs to protrude (or “herniate”) through the cell wall. This occurs when the cell wall is weakened, due to some sort of damage. If pressure continues, the disc can push through the outer ring of the wall, causing a bulge. This is known as a herniated disc.