Benefits of spinal decompression
If you are considering nonsurgical spinal decompression, ask which benefit is being proposed and what evidence supports it. Pain relief, improved walking and a change on a scan are different outcomes. A treatment description is not proof that any of them will occur.
This article concerns table-based traction marketed as nonsurgical decompression. Surgery to relieve pressure on nerves is a different procedure, with different reasons for considering it.
Claimed benefits and what the evidence says
Traction applies a pulling force to the spine. Claims that it reliably draws a disc back into place, prevents degeneration or restores nutrient flow should not be treated as established patient benefits.
A Cochrane review of traction for low back pain found little or no average benefit in the studied outcomes. This is an older review, with evidence searched through 2012; it does not prove the result of every branded device. It does mean that confident promises need better supporting evidence.
NICE recommends against offering traction for low back pain with or without sciatica. For those conditions, its recommendations emphasize other approaches, including exercise.
Compare the proposal with alternatives
Ask the person recommending treatment to connect the proposal to your diagnosis:
| Question | What the answer should help you understand |
|---|---|
| What problem are we treating? | Whether symptoms and examination findings support the explanation. |
| What benefit is realistic for me? | The expected change in daily function, not a promise about disc position. |
| What are the alternatives? | Other conservative care, medical evaluation or a specialist opinion when appropriate. |
| How will we review progress? | A specific measure and a point to stop or reconsider. |
| What will the trial cost? | Total charges and cancellation terms before a longer commitment. |
Nonsurgical does not mean risk-free or appropriate for everyone. The Cochrane review includes reports of worsening symptoms and other adverse effects in some studies. Discuss your medical history and what symptoms would require stopping treatment.
Symptoms that should not wait
Seek emergency care for new difficulty passing urine, loss of bladder or bowel control, numbness around the genitals or buttocks, or severe or worsening weakness in both legs. These can indicate cauda equina syndrome; NHS describes the warning signs.
Read the spinal decompression guide for a fuller discussion, or the disc injury guide for questions about disc-related symptoms. You can contact the office to discuss whether an assessment is appropriate before making a treatment decision.
Continue reading
Practice overview · New-patient visit details
Explore the lower back to compare disc injury, sciatica and back pain.
Follow the evidence
Research, with context.
Published sources behind the discussion. Read the findings alongside the limits; a study is not a diagnosis or a promise of a result.
No effect of traction in patients with low back pain: a single centre, single blind, randomized controlled trial of Intervertebral Differential Dynamics Therapy
60 people with chronic low-back pain and disc degeneration or bulging, without radicular pain, receiving graded activity plus active or sham traction.
What it foundActive traction did not add benefit for pain, disability or quality of life at 14 weeks compared with sham treatment.
What it cannot tell usThe result concerns the studied protocol and population. It does not test every machine or acute sciatica, and it does not support claims of disc regeneration.
Publication details & citation
Schimmel et al. No effect of traction in patients with low back pain: a single centre, single blind, randomized controlled trial of Intervertebral Differential Dynamics Therapy. European Spine Journal. 2009. DOI: 10.1007/s00586-009-1044-3.
Read the publication recordSurgery versus prolonged conservative treatment for sciatica
283 patients with severe sciatica lasting 6–12 weeks, assigned early surgery or prolonged conservative care with surgery if needed.
What it foundEarly surgery provided faster relief and recovery, while one-year outcomes were similar.
What it cannot tell usAbout 39% initially assigned conservative care had surgery. This was not a chiropractic trial and does not show that treatment shrinks discs or guarantees avoiding surgery.
Publication details & citation
Peul et al. Surgery versus prolonged conservative treatment for sciatica. New England Journal of Medicine. 2007. DOI: 10.1056/NEJMoa064039.
Read the publication record
Read our editorial policy for how sources and clinical review are identified.