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Spinal Tethering Surgery: A Minimally Invasive Alternative for Young Patients
What It Is
Spinal tethering is a growth‑modulation technique that uses a flexible cord to gently restrain the convex side of a scoliotic curve while allowing the concave side to continue growing. Unlike traditional spinal fusion, the procedure preserves motion and can correct deformity gradually as the child matures.
Who Benefits
Ideal candidates are adolescents with idiopathic scoliosis whose curves are between 25° and 45° and who still have significant growth remaining (Risser 0‑2). The surgery is less suited for rigid, severe deformities or cases where the vertebrae have already fused.
How the Procedure Works
- Incision & Exposure – Small posterior incisions are made over the affected vertebrae.
- Anchor Placement – Pedicle screws are inserted on the convex side of the curve.
- Tether Application – A titanium cord is attached to the screws and tensioned to gently straighten the spine.
- Verification – Intra‑operative imaging confirms appropriate correction and free motion on the contralateral side.
Recovery & Outcomes
Patients typically leave the hospital within 2‑3 days and resume light activity after 4‑6 weeks. Long‑term studies show that tethering can halt curve progression in >85 % of cases, with many children achieving near‑normal spinal alignment while retaining full flexibility. Complications are rare but may include over‑correction, hardware irritation, or the need for a subsequent fusion if growth is insufficient.
Spinal Tethering Surgery offers a promising, motion‑preserving option for growing patients who seek to avoid the lifelong limitations of spinal fusion.