Tethered Cord Syndrome

What This Page Is and Isn’t

This page offers a plain-language explanation of Tethered Cord Syndrome (TCS), along with what I learned from living with a diagnosis that arrived after Atlantoaxial Instability (AAI), Craniocervical Instability (CCI), and Chiari Malformation. In my case, it took specialized imaging, tests that are not part of a standard workup, to identify it.

TCS is often discussed alongside Hypermobile Ehlers-Danlos Syndrome (hEDS) for good reason. The connective tissue that failed my neck and skull base is the same connective tissue involved here. 

What I share here comes from lived experience, a path I can point to because I walked it. This is not medical advice and does not replace consultation with a qualified healthcare professional. 

What Is Tethered Cord Syndrome?

Tethered cord syndrome occurs when tissue attachments restrict the movement of the spinal cord, placing it under abnormal tension. In a healthy spine, the cord moves freely with the body. When something holds it in place, that tension can affect nerves, blood flow, and the signals traveling between the brain and lower body.

TCS can present in two ways. Classical tethered cord is visible on standard imaging. Occult tethered cord is not. In those cases, the cord position may appear normal, while the tension and its effects are still real. In adults, occult tethered cord is particularly easy to miss because the symptoms overlap with so many other conditions and the imaging looks unremarkable.

Some cases are present from birth. In others, symptoms emerge gradually in adulthood, which is part of why it can go unrecognized for years. When the symptoms are mild or overlap with other conditions, TCS is rarely the first explanation anyone considers. 

In people with connective tissue disorders, TCS is recognized as one of several neurological and spinal conditions that can appear together. When the body’s structural support is already compromised, the pattern often extends beyond a single diagnosis.

Why It Gets Missed

Tethered cord can be missed because the symptoms are easy to split apart. Low back pain gets treated like a spine problem. Urinary urgency goes to urology. Constipation becomes a GI referral. Leg pain gets explained by posture, discs, overuse, or strain. Weakness gets minimized. Numbness gets watched. By the time someone steps back to look at the full picture, years may have passed.

It also gets missed because not every case looks the same. Some people have clear findings early. Others have symptoms that build quietly over time, never reaching the threshold that triggers a different question. A patient can move through neurology, orthopedics, urology, gastroenterology, and physical therapy without anyone identifying what the symptoms share. Each specialist sees their piece. The connection between them doesn’t always make it into the room.

Questions I Found Myself Asking

What does tethered cord syndrome feel like?

Can tethered cord cause low back pain and leg pain?

Why do my legs feel weak or heavy?

Can tethered cord cause bladder symptoms?

Can tethered cord cause constipation or bowel changes?

Why do I feel pulling or tension through my lower spine?

Can tethered cord be missed on routine imaging?

Is adult tethered cord different from childhood tethered cord?

Can tethered cord happen with hEDS?

Can tethered cord happen with Chiari Malformation?

How is tethered cord diagnosed?

Does tethered cord always require surgery?

Symptoms People Commonly Describe

Low back pain. Pulling, aching, or burning into the hips or legs. A body that feels tighter through the lower spine the longer it is upright. Changes in gait. Foot changes. Fatigue in the legs.  Weakness or numbness that is hard to explain. Bladder dysfunction, which can look like urgency, frequency, retention, or incontinence. Constipation or other bowel changes. Scoliosis in some cases. For some people, symptoms are present from childhood. For others, they build over time.

Not everyone experiences all of these, and this list is not exhaustive. The combination and severity vary. What makes TCS difficult to identify is how easily each symptom gets absorbed into a separate explanation. Pain here. Urgency there. Weakness somewhere else. The body rarely presents in tidy categories.

In my case, the lower back pain was never the loudest symptom. It had been there my entire life, quiet enough to manage. Chiropractors realigned my lower back and hips regularly. They noted scoliosis. For years I wore a shoe lift to compensate for a leg length discrepancy nobody ever explained. The adjustments helped temporarily, and the pain kept returning. By the time TCS was identified, my neck, head, and face symptoms were so extreme they had long since drowned out anything happening below. Leg length discrepancy. Hip misalignment. The lifetime of adjustments that never quite held. When I finally had a name for what was happening at the base of my spine, it was the missing puzzle piece.

What I Wish I’d Known

I wish I’d known that occult tethered cord requires a clinician who knows to look for it and imaging that goes beyond the standard workup. A normal MRI does not rule it out.

What found mine was a specialized MRI protocol, where I was face down for one image and then face up for the other. This was combined with a nerve conduction study that measured how long electrical signals took to travel through my nervous system. My husband was in the room for that study, which took close to an hour. The doctor needed time to review the results before sending a report to the neurosurgeon, so we didn’t have answers that day.

When we met with the neurosurgeon to review the findings, I was stunned. A third structural diagnosis. And in that moment, something else became clear. If TCS was real, the connective tissue disorder wasn’t only a theory anymore. It was the most likely explanation underneath everything.

What I Did Next

For tethered cord, my next step was making sure the right people knew. My surgical team in New York City was informed of the diagnosis before my fusion and Chiari decompression surgery.

What this diagnosis gave me was different from the others. TCS is being monitored rather than treated surgically at this point. What that means practically is that I am no longer starting from zero if something changes. I won’t spend years inside a search that has already been completed. The map exists, and now I'll know where to look.

For anyone who has spent years without a name for what their body was doing, having the name, even when the answer is to watch and wait, changes everything about what comes next.

Often Discussed Alongside

Tethered Cord Syndrome is frequently seen alongside other conditions, and many patients receive multiple related diagnoses:

Hypermobile Ehlers-Danlos Syndrome (hEDS)

Chiari Malformation

Craniocervical Instability (CCI)

Atlantoaxial Instability (AAI)

Eagle Syndrome

Postural Orthostatic Tachycardia Syndrome (POTS)

Mast Cell Activation Syndrome (MCAS)