Spinal decompression for sciatica may help some people whose leg pain comes from a bulging or herniated disc. A few trials found less leg pain in the short term. However, it is not for everyone, larger reviews are mixed, and most sciatica gets better with time and simple care. Below, we cover who may benefit, who should skip it and what the research shows. We also explain how Dr. Jenna Patel, D.C. decides if it fits your care.
What is spinal decompression?
Non-surgical spinal decompression is a type of motorized traction run by a computer. You stay fully clothed and lie on the table. Next, harnesses go around your pelvis and trunk. Then the table gently pulls and relaxes in cycles. Your lower back gets a slow, gentle pull, then a short rest.
Surgical decompression is a different thing. In that operation, a surgeon removes bone or disc tissue to make room for a nerve. Everything in this post is about the non-surgical table.
You may see these tables described as FDA cleared. Here is what that means. The FDA regulates these tables as Class II powered traction devices. They typically reach the market through a “510(k) clearance.” That means the FDA found the device substantially equivalent to an earlier one. It is not FDA approval, and it does not prove the table works better than other care.
How spinal decompression for sciatica aims to help
Sciatica is pain, numbness or tingling along the sciatic nerve. It runs from the low back through the buttock and down the leg. It often starts when a bulging or herniated disc presses on a nerve root in the lower spine. Other causes include a narrow spinal canal, called stenosis, and a tight muscle deep in the buttock. You can read more about causes and care on our sciatica relief page.
The idea behind spinal decompression for sciatica is simple. The goal is to ease pressure on the disc and the nerve root with gentle, repeated pulling. In theory, that may calm leg pain for some people. Still, this is a theory. Research has not shown exactly what the table does to a disc. For that reason, we treat it as one tool that may help, not a sure thing.
What the research says
Let’s start with the encouraging part. One 2022 randomized trial looked at people with a herniated disc in the low back. The decompression group had 10 sessions over 8 weeks. At 2 months, that group reported less leg pain than a group whose table used no pulling force. Also, a second 2022 trial added decompression to routine rehab. That group reported better pain and disability scores than people who did rehab alone. Both trials looked at short-term results.
The bigger picture is less clear. Larger reviews are mixed. One example is a Cochrane review of traction for low back pain. In addition, some guidelines do not recommend traction for general low back pain. Another trial compared a decompression system with a sham, or fake, treatment. Both groups improved, with no difference between them. In one more trial, plain motorized traction did about as well as decompression. Also, these trials studied leg pain from a disc. For other causes, such as stenosis, there is not enough evidence to say traction helps.
In short, spinal decompression may ease disc-related leg pain for some people as part of a rehab plan. It is not a sure thing, and it has not been shown to work better than other care. We share all of this so you can decide with clear facts.
Who may benefit from spinal decompression for sciatica
Spinal decompression for sciatica may be worth discussing when a few things line up. Dr. Patel talks these through with you during your exam:
- Leg pain that your exam ties to a bulging or herniated disc in the low back
- No red flags, such as new leg weakness or changes in bladder or bowel control
- Time and energy for the exercise and rehab that go with it
- A wish to try gentle, non-surgical care first, with your progress checked along the way
Why do people consider it? It is non-surgical, you stay clothed, and the pulling is gentle. It can also sit alongside adjustments and exercise in one plan. If a past MRI report mentions disc wear, read our post on spinal decompression for degenerative disc. It explains what the research shows for that problem.
Who should not have spinal decompression
Some people should not use a decompression table at all. WebMD lists these reasons to skip it:
- Pregnancy
- A fracture or a tumor
- An abdominal aortic aneurysm
- Advanced osteoporosis
- Metal implants or hardware in the spine
Dr. Patel also screens for recent spinal surgery, infection and instability in the spine. If any of these apply, we talk with you about other options.
What about side effects? Some trials reported short-lived soreness or a temporary rise in pain. Serious problems are uncommon, although Cochrane noted that many trials did not report side effects well. Our post on side effects and who should avoid it goes into more detail.
What a course of spinal decompression for sciatica looks like
Plans vary from person to person. WebMD describes sessions of 30 to 45 minutes, often 20 to 28 treatments over 5 to 7 weeks. Research protocols have used 10 to 20 sessions. Think of these as commonly described ranges, not a rule for you.
During each session, you simply lie still while the table does the work. Tell us right away if your leg pain gets worse during or after a visit.
Dr. Patel sets a plan after an exam and rechecks your progress. If you are not improving, we change course. That way, your plan follows how your body responds. For more on timing, see our post on how many decompression sessions people need.
When to see a doctor or go to the ER
Most sciatica improves with time and conservative care, though it can come back. Still, some symptoms need a medical doctor first, not a chiropractor. Go to the ER right away if you have:
- Loss of bladder or bowel control
- Numbness in the groin, buttocks or inner thighs
These can be signs of cauda equina syndrome, a nerve emergency. Also see a medical doctor soon if you have:
- Leg weakness or a foot that drags
- Fever along with back pain
- A history of cancer, or weight loss you cannot explain
- Pain that started after a fall
- Night pain that wakes you up
This post is educational and is not a diagnosis.
How we approach it at HealthSource of Roseland
At our Roseland office, Dr. Patel evaluates you first. Your first visit includes a health history questionnaire, a consultation, and a physical exam of your posture, mobility and pain. We take X-rays only if clinically needed. Then Dr. Patel explains a report of findings and a personalized care plan before any care starts.
If spinal decompression for sciatica fits your exam, it becomes one part of your plan, not the whole thing. Dr. Patel may pair it with hands-on adjustments, soft tissue work, and Progressive Rehab® and functional exercise. She looks for the source of the problem, not only the symptoms. You can learn more about our spinal decompression service. If it does not fit your exam, we talk through other options with you.
Cost matters too. Medicare covers chiropractic manipulation for subluxation and not other services such as decompression, so call your plan and us to check. We accept most major insurance plans, so call us to verify yours. We also offer financing through Cherry and CareCredit.
If sciatica is making work, sleep or walking hard, a visit can help you sort out your options. Book a visit online or call (973) 200-2424 to talk it through. Ask about our new-patient visit: consultation, exam and X-rays if clinically needed. The offer is for new patients only. It does not apply to Medicare, Medicaid, other federal healthcare program patients or ACN members.
