Spinal decompression or neurovertebral decompression is a type of motorized, computer-controlled traction that can help relieve back pain. Spinal decompression works by gently stretching the spine. This changes the strength and position of the spine. This change relieves pressure on the spinal discs, which are gel-like cushions between the vertebrae in your spine, by creating negative pressure in the disc. As a result, a bulging disc or herniated disc can retract, which relieves the nerves and other structures in your spine. This, in turn, helps promote the movement of water, oxygen, and nutrient-rich fluids into the discs so they can heal.