What is Tethered Spinal Cord Syndrome

Tethered Spinal Cord Syndrome is a neurological condition caused by tissue attachments that limit the movement of the spinal cord within the spinal column, leading to abnormal stretching and nerve damage. As the spinal cord is pulled downward, it can cause progressive neurological, urological, and orthopedic symptoms that require careful clinical management.

What causes Tethered Spinal Cord Syndrome?

In a healthy spine, the spinal cord hangs freely within the spinal canal. In Tethered Spinal Cord Syndrome, the cord becomes "tethered" by inelastic tissue, such as a thickened filum terminale or scar tissue from prior surgery. This prevents the cord from moving normally during daily activities, causing it to stretch and suffer chronic ischemia (lack of blood flow). This mechanism is often associated with congenital spinal dysraphism, though it can also occur later in life due to trauma or previous spinal interventions.

Who is typically affected by this condition?

Tethered Spinal Cord Syndrome can present at any age, though it is most frequently diagnosed in children due to early physical signs. In adults, the condition may remain asymptomatic for years before manifesting as pain or motor weakness. While the exact prevalence is difficult to determine because many cases go undiagnosed, it is a known complication in 20% to 30% of patients born with spina bifida (myelomeningocele). There is no strong geographic bias, but it is often identified during growth spurts when the spinal cord is stretched more severely.

What are the primary symptoms and clinical signs?

The clinical presentation of Tethered Spinal Cord Syndrome varies significantly between patients. Common manifestations include:

• Progressive leg weakness or muscle atrophy


• Chronic back, leg, or perineal pain


• Bladder and bowel dysfunction (urgency, incontinence, or retention)


• Orthopedic deformities, such as scoliosis or high-arched feet (pes cavus)


• Dermatological markers on the lower back, such as dimples, hair tufts, or skin tags

How does Tethered Spinal Cord Syndrome differ from other spinal conditions?

Unlike degenerative spinal conditions, Tethered Spinal Cord Syndrome is primarily a structural issue where the cord is physically anchored. While other conditions like syringomyelia or spinal tumors cause compression, Tethered Spinal Cord Syndrome causes damage through excessive tension. Distinguishing this from other conditions requires specialized MRI imaging to visualize the position of the conus medullaris (the end of the spinal cord) relative to the vertebrae.

Next steps

• Consult a neurosurgeon specializing in pediatric or adult spinal dysraphism.


• Request a specialized MRI of the entire spine to assess cord position.


• Join the Tethered Spinal Cord Syndrome community at DiseaseMaps.org to connect with 41+ others sharing their lived experience.


• Maintain a symptom diary to track changes in neurological or bladder function for your specialist.

Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment; always seek the advice of your physician.

References

• NIH Genetic and Rare Diseases Information Center (GARD): Tethered Cord Syndrome.


• Orphanet: Rare Disease Database (ORPHA:96145).


• American Association of Neurological Surgeons (AANS): Tethered Cord Syndrome Overview.


• PubMed/NCBI: "Clinical Presentation and Pathophysiology of Tethered Spinal Cord Syndrome."