Decompression therapy also works to increase blood flow to painful areas, thereby prompting the bodys natural healing response. For those suffering from neck, back, leg, and arm pain, spinal decompression therapy may be used by your provider in conjunction with other therapies as part of a comprehensive treatment plan. Conditions that may be improved by spinal decompression therapy include herniated or bulging discs, sciatica, spinal stenosis, or pinched nerves causing radiating pain into the arms and legs.