tethered cord
Abnormal attachment of the spinal cord to surrounding tissues, preventing normal ascent during growth and causing neurological symptoms.
Full Definition
Tethered cord syndrome occurs when the spinal cord is abnormally attached to surrounding tissues, most commonly due to a short or thickened filum terminale, preventing the normal rostral migration of the conus medullaris during growth. This condition can cause progressive neurological deterioration including motor weakness, sensory deficits, bowel and bladder dysfunction, and orthopedic deformities such as scoliosis or foot deformities. In pediatric patients, early recognition and surgical untethering are crucial to prevent irreversible neurological damage. Orthopedic manifestations often prompt the initial evaluation that leads to diagnosis.
Usage
Usage note: May be abbreviated as TCS in subsequent references after full term is established.
In Context
- "Progressive scoliosis in the patient with spina bifida occulta raised concern for tethered cord syndrome." — Neurosurgical consultation
- "MRI revealed low-lying conus medullaris at L3 level, confirming tethered cord requiring surgical release." — Imaging report interpretation