Dural Tension: The Hidden Force That Keeps Pulling Your Spine Out of Alignment

You've been to the chiropractor. Maybe many chiropractors. Each visit, you get adjusted, you feel better for a day or two — maybe a week — and then the pain creeps back in. You return. You get adjusted again. The cycle repeats.

This isn't a failure of chiropractic. It's a failure to identify the right target. And one of the most commonly missed targets in all of spinal care is the dura mater.

Understanding dural tension is one of the keys to understanding why some patients respond quickly and permanently to care while others seem to need adjustment after adjustment without building lasting stability. Let me explain what the dura is, what it does, and what happens when it's under tension.

What the Dura Mater Is

The dura mater — Latin for "tough mother" — is the outermost and toughest of the three membranes (meninges) that surround the brain and spinal cord. Think of it as a continuous fibrous sleeve that begins at the foramen magnum (the base of the skull), descends through the entire spinal canal, and ends at the sacrum.

This is important: the dura is one unbroken structure from your skull to your tailbone. It isn't a series of separate pieces. It's a sleeve — a hydraulic envelope that houses the cerebrospinal fluid (CSF) that bathes and nourishes the brain and spinal cord.

Within the spinal canal, the dural tube has specific points where it attaches firmly to the surrounding vertebrae. The most clinically significant attachments are at C2, C3, and the sacrum. The skull attaches at the occiput. Everything in between is relatively free-floating — which means that when the dura is under tension at any of its attachment points, that tension is transmitted throughout the entire system.

The Occiput-Sacrum Reciprocal Relationship

This anatomical fact — one continuous dural sleeve with firm attachments at the top and bottom — is the entire foundation of Sacro Occipital Technique (SOT). Dr. DeJarnette recognized nearly a century ago that the occiput and sacrum are not independent structures. They are the two ends of one hydraulic-tensile system.

When the sacrum is misaligned, it creates dural tension that travels upward and distorts the occiput and cranial base. When the occiput is restricted, the tension travels downward and affects the sacrum, the lumbosacral junction, and the lumbar spine.

This is why adjusting the low back in isolation often doesn't hold. If the cranial end of the dural tube is under tension, the sacrum will keep being pulled back into its distorted position. Conversely, adjusting the neck without addressing the pelvis misses the structural foundation that everything else sits on.

You cannot treat one end of a tightrope by adjusting only the post on one side. The whole system matters.

Signs That Dural Tension Is Your Problem

Certain clinical patterns strongly suggest dural tension as a primary driver of someone's condition:

Adjustments that don't hold. If you're getting adjusted regularly but the correction consistently fades within days, dural tension is a prime suspect. The adjustment is moving the bone, but the dural tension keeps pulling it back.

Bilateral symptoms. Pain, tightness, or neurological symptoms that affect both sides of the body simultaneously — bilateral sciatica, bilateral shoulder tension, bilateral neck restriction — often have a dural component. A purely mechanical joint problem tends to be unilateral.

Symptoms that alternate sides. This one surprises people. When symptoms shift from one side to the other, the dural tube is often the cause — it's a tensile structure, and tension can shift as you move and compensate.

Stiffness that is worse in the morning. The recumbent position allows the dural tension to unload temporarily, but as the body loads again upon rising, the tension returns quickly and often more intensely.

Concurrent head and low back symptoms. When someone has both headaches and low back pain without a clear localized cause for either, think dural. The system is being pulled at both ends.

How CSF Flow Is Affected

The dural tube is not just structural — it's the conduit for cerebrospinal fluid circulation. CSF is produced in the ventricles of the brain and needs to circulate freely from the cranium down around the spinal cord and back again, driven by the rhythmic cranial motion (the cranial rhythmic impulse, or CRI).

When the dural tube is under tension, this circulation is impaired. The hydraulic dynamics of the system change. CSF may pool in some areas and be inadequate in others. The result can include: brain fog, fatigue, sensitivity to light and sound, difficulty concentrating, and a general sense that the nervous system is not firing cleanly.

This is part of why cranial and sacral treatment — which directly addresses the dural tube — often produces effects that go far beyond back pain relief. Patients frequently report improved sleep, clearer thinking, and reduced anxiety after dural tension is released. The nervous system functions better when its hydraulic envelope is working properly.

The SOT Approach: Treating the Whole System

SOT's category system is designed specifically around the presence and severity of dural tension. Category I addresses basic sacroiliac imbalance. Category II addresses ligamentous injury with dural involvement. Category III addresses disc compromise.

In practice, addressing dural tension in SOT involves a combination of sacral block positioning and cranial correction performed as an integrated sequence — not as separate treatments but as components of one protocol that addresses the dural tube from both ends simultaneously.

The blocks work by using gravity and the patient's own body weight to gently decompress and reposition the sacrum, which releases tension at the inferior attachment of the dural tube. Concurrent cranial work addresses the superior end. When both ends are treated in the same session, the dural tube can begin to normalize its tension and restore proper length and symmetry.

My Assessment Protocol

In my practice, I assess the cranium-sacrum relationship in every patient, regardless of their presenting complaint. This is not excessive — it's essential. The occiput and sacrum are one system. Evaluating the spine without evaluating both ends of the dural tube is like checking tire pressure on only one end of the car.

The assessment includes palpation of the cranial rhythmic impulse, evaluation of occipital position and mobility, sacral motion testing, and specific orthopedic tests that indicate whether dural tension is contributing to the clinical picture. When it is — and it frequently is — the treatment sequence changes accordingly.

Patients who have been stuck in a cycle of temporary relief often find that addressing the dural component is the turning point in their care. Not because everything else they tried was wrong, but because the root cause was finally being addressed.

Key Takeaways

• The dura mater is a single continuous sleeve running from the occiput to the sacrum. It is one structure, not many.
• Firm dural attachments at C2, C3, and the sacrum mean that tension anywhere in the tube affects the entire spine.
• Adjustments that fail to hold are frequently caused by unresolved dural tension pulling the corrected bones back out of position.
• Bilateral symptoms, alternating-side symptoms, and concurrent head-and-low-back complaints all suggest dural involvement.
• CSF flow depends on normal dural mechanics. Restriction impairs brain nourishment and the nervous system's waste-removal function.
• SOT addresses the dural tube directly through sacral block positioning and integrated cranial correction.

If you've been caught in the cycle of temporary relief followed by return of symptoms, it's time to look at the whole system. Call Pura Vida Chiropractic at (210) 685-1994 and let's find out what's really driving your pain. Dr. Dan Foss serves the San Antonio community in English and Spanish.