Does spinal decompression really work?

A 2007 debate paper found only limited evidence to warrant routine use of non-surgical spinal decompression, particularly when many well-investigated, less expensive alternatives are available. The AAOS says traction is often used, but there is no scientific evidence of its effectiveness.

Are inversion tables safe?

Not for everyone, says Cleveland Clinic's Dr. Haren Bodepudi. Cleveland Clinic lists conditions to discuss with your healthcare provider first if you're high-risk for them or have a history of them, including high or low blood pressure, heart conditions, glaucoma and other eye diseases, acid reflux, pregnancy, stroke and brain injury. It says research shows inversion therapy can cause increased pressure in your skull, and that this sudden increase in pressure can cause significant damage and could even be fatal. It also says to have someone with you the first time, and to start with 30 to 45 seconds.

How soon might an inversion table help?

Cleveland Clinic says some people find quick, short-term relief from pain. Dr. Bodepudi says long-term benefits could take as much as eight weeks to appear if you use it daily. Cleveland Clinic says it shouldn't be your only treatment, but it can complement your doctor's orders for pain management.

A therapist stretches a patient's back during a physical therapy session

Spine-care product guide · cited sources

Spinal decompression & traction devices

Photo: Yan Krukau / Pexels

A 2007 paper describes spinal decompression therapy as a form of motorised traction, and Cleveland Clinic calls inversion therapy, hanging upside down, a spinal decompression technique. The 2007 paper found only limited evidence to warrant routine use of non-surgical spinal decompression, and the AAOS says traction is often used but there is no scientific evidence of its effectiveness. For inversion tables, a Cleveland Clinic doctor says the research is mixed.

What it is

A 2007 paper says traction has been used to treat low back pain for decades, progressing from simple static traction to intermittent motorised traction. It defines spinal decompression therapy as motorised traction with variable force, variable pull and relax times and, in some units, variable angles of pull. At the time, it said, these machines cost practitioners from $9,000 to well over $100,000 each (Daniel, Chiropractic & Osteopathy, 2007).

The paper describes itself as a debate article, not a systematic review. It says it was prepared by a single author and as a result might include bias, although the author attempted to be fair in his assessment, and that it was wholly funded by the Parker College of Chiropractic.

Cleveland Clinic says inversion therapy, also known as spinal traction, is a spinal decompression technique that involves hanging upside down, usually on an inversion table or chair. It says the theory is that gravity briefly takes the pressure off the nerves of your lower back and gives the discs between your vertebrae room to relax.

This guide does not rate brands or models. SpinalCare has not tested any of these devices.

Evidence

Limited evidence

Limited evidence for spinal decompression (2007 debate paper), no scientific evidence for traction (AAOS), and mixed research on inversion tables (Cleveland Clinic)

The 2007 paper found only one small randomised controlled trial and several lower-level studies of spinal decompression therapy, and said their quality was questionable in general. Many of the studies used one brand of machine, the VAX-D, which has you lie face down, and the paper questioned whether that research applies to machines that have you lie face up. It concluded that only limited evidence is available to warrant the routine use of non-surgical spinal decompression, particularly when many other well-investigated, less expensive alternatives are available.

The paper said that, at the time, the therapy had never been compared with exercise, spinal manipulation, standard medical care or other less expensive conservative treatments, which it says have an ample body of research showing they work. It also raised concerns about the objectivity of the published research. For example, an author of the only randomised trial had a financial interest in VAX-D technology in Australia.

The AAOS says traction is often used for low back pain, but there is no scientific evidence of its effectiveness.

For inversion tables, Cleveland Clinic's Dr. Haren Bodepudi says the research is mixed: some studies have found it can provide relief for some people, but others haven't found any benefit. Cleveland Clinic says most of the studies have been small, and there's a need for higher-quality research with larger clinical studies.

Dr. Bodepudi says he wouldn't recommend inversion therapy by itself for treating back pain, but it's something you might try in combination with other therapies, like over-the-counter pain medications, physical therapy, yoga, and at-home stretching and core-strengthening exercises.

Common types

Inversion table or chair

For an inversion table, Cleveland Clinic says you lie down and strap yourself in, then slowly tip yourself backward, from a slight recline up to a 180-degree position, based on your comfort level. It says the angle adjustment system and manual handlebars give you control over how far back you go and the speed of inversion. See the safety cautions below.

Motorised spinal decompression

Motorised traction with variable force and timing, such as the VAX-D. This is the therapy the 2007 paper covered. It found only limited evidence to warrant routine use.

Other traction

The 2007 paper describes traction ranging from simple static traction to intermittent motorised traction. The AAOS says traction is often used for low back pain, but there is no scientific evidence of its effectiveness.

Choosing a product

Cleveland Clinic's first step: talk to your doctor. Dr. Bodepudi says inversion therapy isn't safe for everyone, so talk to your physician to make sure you can use it safely.
Cleveland Clinic suggests you might try it in physical therapy first. It says physical therapists sometimes use inversion therapy, and you might want to try it in physical therapy before you invest in a table for home.
Cleveland Clinic: start small, with someone around the first time. It says to make sure someone else is around the first time, in case you need help getting up, and to begin with just 30 to 45 seconds tilted backward. If you don't feel dizzy and your pain doesn't get worse, it says you can work up to longer stretches. It also says not to overdo it: though studies find mixed results, research suggests three minutes at a 60-degree tilt is the sweet spot.
Dr. Bodepudi: follow the manufacturer's instructions. He says to follow the manufacturer's instructions for your specific inversion table.
Alternatives the 2007 paper named. The paper points to well-investigated, less expensive alternatives, and names exercise, spinal manipulation and standard medical care as treatments with an ample body of research showing they work.

Safety

Cleveland Clinic says that when you're upside down, blood rushes to your head, which can make you dizzy or worsen your pain if you flip up fast. It says research shows inversion therapy can cause increased pressure in your skull, and that this sudden increase in pressure can cause significant damage and could even be fatal.
Cleveland Clinic says to talk to your healthcare provider before using an inversion table if you're high-risk for, or have a history of: high or low blood pressure; heart disease, postural orthostatic tachycardia syndrome (POTS) or other heart conditions; glaucoma or other eye diseases; acid reflux; pregnancy; stroke; or brain injury or brain damage.
The NHS says to see a GP (a primary care doctor) if you have back pain and: it does not improve after treating it at home for a few weeks; it's stopping you doing your day-to-day activities; you're worried about the pain or you're struggling to cope; you've lost weight without trying to; there's a lump or swelling in your back, or your back has changed shape; it does not improve after resting or is worse at night; it's worse when sneezing, coughing or pooing; or it's coming from the top of your back (between your shoulders), rather than your lower back.
The NHS says to ask for an urgent GP appointment or get help from NHS 111 if you have back pain and you feel hot, cold, shivery or generally unwell; it's severe pain that starts suddenly; or it's getting worse quickly. It says 111 can help if you think you need medical help right now. In the US, MedlinePlus says that if your problem is not life threatening or risking disability, but you are concerned and you cannot see your provider soon enough, to go to an urgent care clinic. It lists back pain among the minor injuries an urgent care clinic can deal with.
In the US, MedlinePlus says to call 911 or the local emergency number to have the emergency team come to you right away for an injury to the neck or spine, particularly if there is loss of feeling or inability to move. It says to go to an emergency department or call 911 for problems such as severe pain anywhere on the body. In the UK, the NHS says to call 999 or go to A&E if you have back pain and: pain, tingling, weakness or numbness in both legs; a loss of feeling around your genitals or anus; changes in your bladder or bowels, such as difficulty peeing, or peeing or pooing yourself; changes in how your penis or vagina feels during sex, or not being able to get or keep an erection or to orgasm; chest pain; or it started after a serious accident, such as a car accident. It says A&E is also known as the emergency department, and not to drive there: ask someone to drive you, or call 999 for an ambulance.

Frequently asked

Does spinal decompression really work?: A 2007 debate paper found only limited evidence to warrant routine use of non-surgical spinal decompression, particularly when many well-investigated, less expensive alternatives are available. The AAOS says traction is often used, but there is no scientific evidence of its effectiveness.
Are inversion tables safe?: Not for everyone, says Cleveland Clinic's Dr. Haren Bodepudi. Cleveland Clinic lists conditions to discuss with your healthcare provider first if you're high-risk for them or have a history of them, including high or low blood pressure, heart conditions, glaucoma and other eye diseases, acid reflux, pregnancy, stroke and brain injury. It says research shows inversion therapy can cause increased pressure in your skull, and that this sudden increase in pressure can cause significant damage and could even be fatal. It also says to have someone with you the first time, and to start with 30 to 45 seconds.
How soon might an inversion table help?: Cleveland Clinic says some people find quick, short-term relief from pain. Dr. Bodepudi says long-term benefits could take as much as eight weeks to appear if you use it daily. Cleveland Clinic says it shouldn't be your only treatment, but it can complement your doctor's orders for pain management.

Sources

This guide organises information from the cited sources for general education and is not medical advice. A qualified clinician can advise on your own care. Last updated October 21, 2026.