Scoliosis care is shifting
Spine specialists are reporting a move toward motion-preserving scoliosis treatments, like vertebral body tethering, instead of full fusion for some patients. That trend implies future sports-focused spine care will need to account for techniques that preserve mobility while controlling deformity, changing return-to-play discussions and long-term management (x.com). The shift is notable because it alters the risk–benefit conversation for athletes with progressive spinal curves.
A scoliosis operation used to mean locking part of the spine into one solid column with rods and screws. Now more spine centers are offering a different idea for selected kids: guide the curve as they grow, but leave the spine moving. (fda.gov) Scoliosis is a sideways curve of the spine that usually shows up between ages 10 and 18, and the most common form is called idiopathic because doctors do not know the exact cause. Small curves are often watched or braced, but bigger curves can keep progressing during growth. (chop.edu) The old standard is spinal fusion, which works by straightening the curve and then getting several vertebrae to heal into one rigid segment. It is effective, but a fused section no longer bends the way separate bones do, like turning a chain into a metal bar. (chop.edu) The newer option is vertebral body tethering, which uses screws and a flexible cord on the outside of the curve. Surgeons tighten the cord during surgery, and then future growth helps the straighter side catch up over time. (fda.gov) The Food and Drug Administration cleared the first tether device in August 2019 for skeletally immature patients with progressive idiopathic scoliosis who need surgery after bracing fails. The agency said the device was designed to maintain a fuller range of motion than fusion while growth continues to correct the curve. (fda.gov) This is not for every patient with a crooked spine. Children’s Hospital of Philadelphia says typical candidates have idiopathic scoliosis, are still growing, and have curves around 35 to 65 degrees. (chop.edu) Boston Children’s describes tethering as a “growth modulation” treatment, which is a simple way of saying the surgery tries to steer growth instead of stopping motion. That is why it has become the main motion-preserving alternative to fusion in pediatric scoliosis care. (childrenshospital.org) The sports angle is where the shift gets concrete. A 2023 comparative study found patients who had tether-based surgery returned to sport in about 13.5 weeks on average, versus 27.9 weeks after posterior spinal instrumentation and fusion, and they reported fewer limits in bending. (sagepub.com) That does not mean tethering is the new easy answer. A 2024 Scoliosis Research Society review says vertebral body tethering preserves flexibility and growth, but it also carries higher rates of complications and reoperation than fusion in the current literature. (srs.org) One complication keeps coming up: the cord can break. Children’s Hospital Los Angeles says tether breakage can occur in up to 50% of cases, and an international study it highlighted found that about half of patients had curve progression after a break. (chla.org) So the conversation around a teenage soccer player or gymnast with a progressive curve is changing. Instead of one tradeoff between curve control and motion loss, surgeons and families are now weighing faster return, more preserved bending, ongoing growth, and a higher chance of revision surgery on the other side. (frontiersin.org) The result is not the end of fusion. It is a more split future, where fusion remains the durable standard for many patients, while motion-preserving procedures are carving out a bigger role for carefully selected kids whose sports, growth, and long-term mobility all matter at the same time. (srs.org)
