Which are the causes of Tethered Spinal Cord Syndrome?

Tethered Spinal Cord Syndrome is primarily caused by abnormal tissue attachments that restrict the movement of the spinal cord within the spinal column, leading to tension and neurological damage. These attachments are most often congenital (present at birth) due to defects in spinal development, though they can also be acquired later in life through injury or surgery.

What causes Tethered Spinal Cord Syndrome?

The core mechanism of Tethered Spinal Cord Syndrome involves the spinal cord becoming "stuck" or "tethered" to the surrounding tissues. In a healthy spine, the cord moves freely as we bend or stretch. When this mobility is restricted, the cord undergoes constant mechanical stretching, which can reduce blood flow and damage nerve cells. Think of it like a rubber band that is permanently pulled tight; over time, the tension leads to micro-trauma and progressive neurological symptoms.

Is Tethered Spinal Cord Syndrome hereditary?

While Tethered Spinal Cord Syndrome is not always directly inherited, it is strongly associated with congenital neural tube defects (NTDs) like spina bifida. Genetic factors play a significant role in the development of these initial defects. Some specific causes and risk factors include:

• Congenital defects: Failure of the neural tube to close properly during embryonic development (e.g., myelomeningocele).


• Lipomas: Fatty tumors that grow on the spinal cord and anchor it to surrounding structures.


• Thickened filum terminale: A condition where the fibrous band at the base of the spinal cord is abnormally thick and short.


• Acquired tethering: Scar tissue formation from prior spinal surgeries, infections, or physical trauma.

Is the cause fully understood?

While the mechanical basis of Tethered Spinal Cord Syndrome is well-documented, researchers are still investigating the precise molecular pathways that lead to spinal dysraphism. Current research focuses on how folate metabolism and gene-environment interactions during the first trimester contribute to the structural anomalies that trigger Tethered Spinal Cord Syndrome.

Next steps

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


• Schedule an MRI of the entire spine, the gold standard for diagnosing Tethered Spinal Cord Syndrome.


• Join the 41 members of the DiseaseMaps.org community to share experiences and find support.


• Monitor for new neurological changes, such as weakness or bladder dysfunction, and report them to your specialist immediately.

Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment.

References

• NIH Genetic and Rare Diseases Information Center (GARD)


• Orphanet: Portal for rare diseases and orphan drugs


• OMIM (Online Mendelian Inheritance in Man)


• The Tethered Cord Syndrome Foundation