Does Inversion Therapy Work?

Inversion Table

Verywell / Brianna Gilmartin 

Inversion therapy is a physical therapy technique in which you are [suspended] upside down on an inversion table, or using TKTK. The idea is that this takes pressure off the back and provides traction for the spine, [and relieves lower back pain, sciatica, etc].


The effectiveness and safety of inversion therapy [is controversial, etc, therefore it's important to understand the risks and benefits ...]

How Inversion Therapy Works

The theory behind inversion table use is that by flipping your body over, you are able to unload the bones, joints, and discs in the low back. This is thought to create a traction force through the spine, and it has been theorized that traction can decrease low back pain. Another name for inversion tables or inversion therapy is gravitational traction.

By separating the discs and joint spaces in your spine, it is theorized that you can take the pressure off spinal nerves and relax muscles.

An inversion table is a padded table that is connected to a metal frame with hinges. To use the inversion table, you strap yourself on the table and slowly allow the table to flip over, thus inverting the body.

What Research Says

Most studies indicate that inversion therapy does cause some traction force through the lumbar spine. One study found as much as a 3 mm separation between lumbar vertebrae during inversion therapy. So the question arises: Does lumbar traction help low back pain?

Several studies about the efficacy of traction for LBP were of poor quality. Those studies that were of high quality were not able to demonstrate that lumbar traction helps LBP. In other research, findings indicated that traction for acute, sub-acute and chronic LBP received a grade of "C" (no benefit demonstrated).

One small study examined the effect of inversion on the need for surgery in people with single level disc herniations. The researchers found that 77% of the patients were able to avoid surgery using inversion, compared to 22% of patients not using inversion. If you are facing surgery for sciatica, inversion may then be a last-ditch attempt to avoid the knife.

If studies show that inversion traction is not likely to help, should you forget about it altogether? Not necessarily. Simply understanding the expected benefits and risks associated with inversion, or any other treatment for back pain can help you make an informed decision about your care.

While lumbar traction did not seem detrimental to individuals with low back pain, it also didn’t seem to help much.

Types of Inversion Therapy 

inversion table

Risks and Complications

The most common risks associated with inversion tables are an unsafe rise in blood pressure, a rise in pressure in the eyes (glaucoma), or a rise in heart rate. It is therefore recommended that if you have glaucoma, high blood pressure, or cardiovascular disease you check with your healthcare provider before attempting inversion therapy. Falling off the inversion table while getting on or off it is another small risk, so if you try inversion, be careful.

Frequently Asked Questions

How does inversion therapy work? (answered inline text “How Inversion Therapy Works”)

How long does inversion therapy take to work?

How long should you do inversion therapy at one time?

A Word From Verywell

The best treatment for nonspecific acute low back pain is to remain as active as possible. For sub-acute and chronic low back pain, the evidence shows that exercise received a grade of “A” (benefit demonstrated). This means that when back pain strikes, it is best to remain active and engage in the right exercises for your condition. Your physical therapist can show you the best exercises for you.

If you are suffering from low back pain or pain in the leg that is coming from the back (sciatica), the best treatment for you to engage in is to continue normal routines and perhaps add exercise. The use of mechanical traction seems to offer little or no benefit for low back pain.

Comparing the risks associated with inversion tables (glaucoma, blood pressure changes, heart rate changes) with the benefits expected with using inversion for low back pain, it would seem that your time (and money) would be better spent exercising to help treat your pain.

A visit to your physical therapist is a reasonable plan of care for your low back. He or she can prescribe exercises for back pain and help you change your posture to help your condition. Your physical therapist can also teach you why your back is hurting and can help provide strategies to prevent future problems with your low back.

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4 Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. Qaseem A, Wilt TJ, Mclean RM, Forciea MA. Noninvasive treatments for acute, subacute, and chronic low back pain: A clinical practice guideline from the American College of Physicians. Ann Intern Med. 2017;166(7):514-530. doi:10.7326/M16-2367

  2. Wegner I, Widyahening IS, Van tulder MW, et al. Traction for low-back pain with or without sciatica. Cochrane Database Syst Rev. 2013;(8):CD003010. doi:10.1002/14651858.CD003010.pub5

  3. Prasad M, et al. Inversion therapy in patients with pure single level lumbar discogenic disease: a pilot randomized trial. Disability and Rehabilitation. 34(17); 2012. doi:10.3109/09638288.2011.647231

  4. McMonnies CW. Intraocular pressure and glaucoma: Is physical exercise beneficial or a risk?. J Optom. 2016;9(3):139–147. doi:10.1016/j.optom.2015.12.001

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