How scoliosis is fixed depends on the size of the curve, the patient’s age, and how much growing they have left to do. Curves under 20 degrees are typically monitored with X-rays every six months. Curves between 20 and 40 degrees often call for bracing and physical therapy. Curves at 40 degrees or above are generally referred for surgery. The angle of the curve, measured on an X-ray as the Cobb angle, drives nearly every treatment decision.
Observation for Mild Curves
A Cobb angle between 10 and 19 degrees is considered mild scoliosis. At this stage, no active treatment is needed. Your doctor will order X-rays every six months to track whether the curve is staying put or getting worse. For many people, especially those who are close to finishing their growth, the curve never progresses beyond this point.
The risk of progression is highest in younger, skeletally immature patients. Doctors assess skeletal maturity using a grading system based on the growth plates of the hip (called Risser grading). A Risser grade of 0 or 1 means significant growth remains, which increases the chance a curve will worsen and may prompt earlier intervention even at moderate angles.
Bracing to Slow Progression
For curves between 20 and 39 degrees in a still-growing adolescent, bracing is the primary treatment. A brace won’t reverse an existing curve, but a landmark multicenter study demonstrated that bracing is superior to observation alone at preventing curve progression and reducing the need for surgery.
Most braces are rigid plastic shells (called TLSO braces, with the Boston brace being the most common type) worn for a minimum of 18 hours per day. You can take the brace off for sports, showering, and bathing, but the more consistently it’s worn, the better the outcome. For patients who struggle with daytime wear, a nighttime-only option called the Providence brace exists. It applies a stronger overcorrection to the spine, which is why it can only be worn while lying down. If the curve progresses despite nighttime-only bracing, patients are sometimes transitioned to a full-time TLSO brace.
Scoliosis-Specific Physical Therapy
Physical therapy for scoliosis isn’t general stretching or strengthening. The most widely used approach is the Schroth method, a program designed to de-rotate, elongate, and stabilize the spine in three dimensions. It works on three core principles: restoring muscular symmetry on both sides of the spine, training you to be aware of your posture throughout daily life, and using a specialized breathing technique called rotational angular breathing, where you breathe into the concave (caved-in) side of your rib cage to help reshape the ribs and surrounding soft tissue.
Scoliosis creates an imbalance where muscles on one side of the spine become weak and wasted while muscles on the other side are overworked and tight. Schroth exercises target both problems simultaneously. Most patients see visible improvement in their curvature after completing a program. Physical therapy is often used alongside bracing for moderate curves, or as a standalone approach for milder ones.
Spinal Fusion Surgery
When a curve reaches 40 degrees or more, surgery becomes the standard recommendation. The most common procedure is spinal fusion. A surgeon places bone graft material between the affected vertebrae and secures them with metal rods, screws, and plates. Over several months, the bone graft heals and the vertebrae fuse into a single, solid segment, permanently straightening the curved section of the spine.
Correction rates are substantial. Even for severe curves averaging around 107 degrees, surgical techniques achieve roughly 60 to 62 percent correction. Complication rates vary by technique: the lowest-risk approach (Ponte osteotomy) carries about a 4 percent complication rate, while more aggressive techniques used for the most severe curves can have complication rates up to 24 percent. The most common complications in complex cases include significant blood loss, respiratory issues, and implant-related problems.
The trade-off with fusion is mobility. Fusing several vertebrae together creates one long, immovable segment in the spine, which limits bending and twisting in that area. Over time, the segments above and below the fusion may experience increased wear because they compensate for the lost motion. This is a real long-term consideration, especially for young, active patients.
Vertebral Body Tethering: A Fusion Alternative
Vertebral body tethering (VBT) is a newer, growth-sparing option for select patients. Instead of fusing the spine rigid, a surgeon attaches a flexible cord to screws along the outer curve of the spine. As the child grows, the tether restrains growth on the longer side while allowing the shorter side to catch up, gradually straightening the curve over time.
The ideal candidates are between ages 10 and 15 with progressive curves between 35 and 65 degrees and significant skeletal growth remaining. Skeletal age, assessed through hand X-rays, matters more than chronological age. VBT isn’t right for very young patients with a lot of growth left because the tether can overcorrect the spine, creating a curve in the opposite direction. It also isn’t appropriate for patients who are nearly done growing, since the correction depends on future growth.
Patients who undergo VBT tend to return to school and sports slightly earlier than those who have fusion, and they retain more spinal flexibility because the vertebrae aren’t permanently locked together.
Growing Rods for Young Children
Children diagnosed with scoliosis before age 10 present a unique challenge: their spines and lungs are still developing, so a permanent fusion would limit both spinal growth and lung capacity. Magnetically controlled growing rods (MAGEC rods) solve this problem. Titanium rods with a magnetic component in the center are surgically attached to the spine above and below the curve. At follow-up visits every three to six months, a doctor uses an external remote control to activate the magnet and lengthen the rods from outside the body, with no additional surgery needed.
This process continues until the child finishes growing, at which point the rods are typically replaced with a permanent fusion. The key advantage is that the spine and chest cavity can continue developing normally during childhood while the curve stays controlled.
How Treatment Differs for Adults
Adult scoliosis falls into two categories: a childhood curve that has progressed over decades, or a new curve caused by age-related spinal degeneration, often accompanied by spinal stenosis (narrowing of the spinal canal) and osteoporosis. The goals of treatment shift in adults. Adolescent treatment focuses on preventing progression during growth. Adult treatment focuses on relieving pain, restoring the ability to stand upright, and protecting nerve function.
Nonsurgical options like physical therapy and pain management are tried first. Surgery is reserved for adults whose curves exceed 50 degrees with significant impairment of daily function, those with worsening lung or nerve symptoms, those who can’t stand upright for normal activities, or those who don’t respond to conservative treatment over time. Adults with spinal stenosis often need a decompression procedure, where bone is removed from the spinal canal to free compressed nerves, before fusion is performed. One of the more complex considerations in adult surgery is achieving proper sagittal balance, making sure the spine is aligned not just side to side but also front to back, so the patient can stand and walk without leaning forward.
Recovery After Surgery
Recovery from scoliosis surgery follows a predictable timeline. Most patients are walking within the first few days after the procedure. The first three months focus on rebuilding basic fitness: light activities like swimming, stationary cycling, and gentle jogging are typically allowed as tolerated. Around six months, many adolescents can return to more demanding sports like soccer and basketball, as long as there’s no direct contact, gradually increasing intensity over time. High-impact and contact sports like rugby, judo, and martial arts are generally cleared at 9 to 12 months, provided clinical follow-ups confirm solid healing.
VBT patients tend to hit these milestones slightly sooner than fusion patients, particularly adolescents who were already physically active before surgery. Regardless of the procedure, the return to full activity is gradual and guided by regular imaging and clinical exams to confirm the hardware is stable and the spine is healing as expected.