Nonsurgical spinal decompression is a type of motorized traction that may help relieve back pain. This therapy works by gently stretching the spine by changing the force and position of the spine. This takes stress off the spinal gel-like filled cushioned discs by creating negative pressure. As a result, bulging or herniated disks may retract, reducing pressure off nerves and other structures in your spine. This reduction of pressure inside the discs (decompression) aids in pulling nutrients, oxygen, and moisture back into the disks so they can heal.