How can spinal decompression help with back pain?

Traction: By spinal decompression i will assume that you mean traction, such as using a vax-d or similar machine. The concept of traction is to restore lost disc height, which can result in improved spinal canal diameter and reduced nerve pinching. The problem with traction is that it is often temporary - in other words, once out of traction, the spine gradually settles back to its original state.

Relief the pressure: Spinal decompression is a term that describes the relief of pressure on one or many pinched nerves of the spinal column. Spinal decompression can be achieved both surgically and non-surgically and is used to treat conditions that result in chronic back pain such as disc bulge, disc herniation, sciatica, spinal stenosis, and isthmic and degenerative spondylolisthesis.