For patients dealing with chronic low back pain, disc herniations, or degenerative disc disease, the conversation often eventually turns to surgery. But surgery carries real risks, requires significant recovery time, and does not always produce the results patients hope for.

Spinal decompression therapy offers a non-surgical alternative that has helped many patients avoid surgery entirely — or recover more fully after conservative care has stalled.

How Spinal Decompression Works

Spinal decompression is a form of motorized traction that gently stretches the spine in a controlled, intermittent pattern. Unlike traditional traction, which applies a constant pull, decompression therapy uses a computer-controlled system to vary the angle and force of the stretch in a way that prevents the muscles from guarding against it.

This intermittent distraction creates a negative pressure — or vacuum effect — within the disc. That negative pressure does two important things:

It draws herniated disc material back toward the center of the disc. When a disc herniates, the soft inner nucleus pushes through a tear in the outer annulus and can press on a nearby nerve root. The vacuum effect created by decompression can help retract that herniated material, reducing nerve compression and the pain, numbness, and tingling that come with it.

It promotes the influx of nutrients, oxygen, and fluids into the disc. Spinal discs do not have a direct blood supply — they rely on a process called imbibition to absorb nutrients from the surrounding tissue. Degenerated discs are dehydrated and nutrient-depleted. The pressure changes created by decompression therapy stimulate this imbibition process, supporting disc healing and hydration.

Conditions That Respond Well to Spinal Decompression

Spinal decompression is most effective for conditions involving disc pathology and nerve compression:

Lumbar disc herniation: The most common indication. Patients with herniated discs causing low back pain and sciatica often respond very well to decompression therapy, particularly when the herniation is recent.

Degenerative disc disease: As discs lose height and hydration over time, the space available for nerve roots decreases and the mechanical load on the facet joints increases. Decompression therapy can slow this process and reduce the pain associated with it.

Spinal stenosis: Narrowing of the spinal canal or nerve root canals can compress the spinal cord or nerve roots. Decompression therapy can temporarily increase the available space and reduce nerve irritation.

Facet syndrome: When the facet joints become inflamed and painful — often as a result of disc degeneration — decompression therapy reduces the compressive load on these joints and can provide significant relief.

Post-surgical syndrome: Some patients who have had back surgery continue to experience pain. Decompression therapy can be appropriate for certain post-surgical patients, depending on the type of surgery and the nature of the ongoing symptoms.

What a Decompression Session Looks Like

Decompression therapy is comfortable and non-invasive. You lie on a specialized table, fully clothed, while a harness is fitted around your pelvis. The computer-controlled system then applies gentle, rhythmic traction to your lumbar spine over the course of 15 to 30 minutes.

Most patients find the treatment relaxing. Some feel immediate relief during the session; others notice improvement over the course of several treatments. A typical course of care involves 15 to 20 sessions over 4 to 6 weeks, often combined with chiropractic adjustments, soft tissue therapy, and therapeutic exercises.

Is Spinal Decompression Right for You?

Spinal decompression is not appropriate for everyone. It is generally not recommended for patients who are pregnant, have had spinal fusion surgery, have spinal fractures or tumors, have severe osteoporosis, or have certain types of implanted hardware.

The best way to determine whether decompression therapy is appropriate for your situation is a thorough evaluation. Dr. Tim Joy will review your history, examine your spine, and — if indicated — review any imaging you have had to determine whether decompression is likely to help.

If you have been dealing with chronic back pain, a disc herniation, or sciatica and are looking for a non-surgical option, call Evergreen Spinal Health Center at (253) 683-4277 to schedule a consultation.

Frequently Asked Questions About Spinal Decompression

How many spinal decompression sessions will I need?

Most patients with disc herniations or degenerative disc disease require 15 to 20 sessions for optimal results. Sessions are typically scheduled 3 to 5 times per week for the first few weeks, then tapered as improvement occurs. Some patients notice significant relief within the first 5 to 6 sessions; others see gradual improvement over the full course of care.

Is spinal decompression the same as traction?

They are related but not identical. Traditional traction applies a constant, sustained pull to the spine. Spinal decompression uses a computer-controlled, intermittent distraction pattern that varies in force and angle. This variation prevents the muscles from guarding against the stretch — which is the main limitation of traditional traction — and is what allows decompression to create the negative intradiscal pressure that makes it effective for disc herniations.

Can spinal decompression help me avoid back surgery?

For many patients with disc herniations and degenerative disc disease, yes. Multiple studies have found that a significant percentage of patients who complete a full course of spinal decompression therapy avoid surgery. Results depend on the severity of the condition, how long it has been present, and whether the patient follows through with the full course of care and the recommended home exercises.