Pediatric Scoliosis

Introduction

If your child has just been diagnosed with scoliosis, or a school screening, paediatrician, or family doctor has raised a concern about the shape of their spine, you are likely working through a lot of new information at once. You may have noticed uneven shoulders, a shoulder blade that sticks out more than the other, a tilted waist, or a curve that becomes more visible when your child bends forward. You may have been told the curve is mild and needs watching, or that a brace or surgery is being considered.

This guide is written for parents in that situation. It explains what paediatric scoliosis is, why it happens, how doctors decide between observation, bracing, and surgery, what each path involves, and what recovery and long-term outlook look like. The aim is to help you understand the choices ahead so that conversations with your child’s orthopaedic team feel less overwhelming and more collaborative.

Scoliosis is a sideways curvature of the spine. When viewed from behind, a healthy spine runs in a straight line down the middle of the back. In a child with scoliosis, the spine curves to one side, often forming a “C” or “S” shape. The curve is also usually rotated, which is why one shoulder blade or one side of the rib cage may look more prominent.

Doctors measure the size of the curve on an X-ray using something called the Cobb angle. A spine is considered scoliotic when the Cobb angle is 10 degrees or more. Curves below 10 degrees are usually treated as spinal asymmetry, not scoliosis.

Paediatric scoliosis is grouped by the age at which the curve appears:

• Infantile scoliosis — appears from birth to age 3
• Juvenile scoliosis — appears between ages 4 and 10
• Adolescent idiopathic scoliosis (AIS) — appears between ages 10 and 18, and is by far the most common form

Infantile and juvenile scoliosis are often grouped together as “early-onset scoliosis,” because curves that appear before the age of about 10 raise specific concerns about how the lungs and chest wall will develop alongside the spine.

The word idiopathic simply means “the cause is unknown.” The majority of paediatric scoliosis cases — especially in adolescents — are idiopathic. Other types are linked to a specific cause and are described below.

Types of Pediatric Scoliosis

Idiopathic Scoliosis

This is the most common form. There is no single identifiable cause, although genetics clearly play a role. A child with a parent or sibling who had scoliosis is more likely to develop it. Idiopathic scoliosis is more common in girls, who are also more likely to have curves that progress and need treatment.

Congenital Scoliosis

Congenital scoliosis is present from birth and is caused by vertebrae that did not form normally while the baby was developing in the womb. One or more vertebrae may be incompletely formed (a hemivertebra) or fused together. Because the abnormality is structural and present from the start, congenital curves may be noticed in infancy, although smaller ones can go undetected until a child is older.

Neuromuscular Scoliosis

This form develops in children who have a condition affecting the nerves or muscles that support the spine. Examples include cerebral palsy, muscular dystrophy, and spina bifida. The spine curves because the muscles around it are weak, tight, or work asymmetrically. Neuromuscular curves tend to progress more steadily and may need treatment earlier than idiopathic curves.

Syndromic Scoliosis

Some genetic syndromes — including Marfan syndrome, Ehlers-Danlos syndrome, and neurofibromatosis — carry a higher risk of scoliosis as part of a wider pattern of features. Children with these conditions are usually monitored for scoliosis as part of their overall care.

Causes and Risk Factors

For most adolescents with scoliosis, no specific cause is found. Research points to a combination of genetic factors, growth-related biomechanics, and possibly hormonal influences during puberty. What is more useful to understand than a single cause is the pattern of risk factors that make a curve more likely to develop or to worsen.

Factors That Influence Risk and Progression

• Age at diagnosis. The younger the child when a curve is found, the more remaining growth there is — and growth is what drives curves to get larger.
• Size of the curve at diagnosis. Larger curves at first detection are more likely to progress further.
• Sex. Girls are more likely than boys to have curves that progress to a size requiring treatment.
• Skeletal maturity. Doctors estimate how much growth is left by looking at signs like the start of menstruation, breast and pubic hair development, and X-ray markers such as the Risser sign (a marker on the pelvis that shows how mature the skeleton is).
• Family history. Scoliosis often runs in families.
• Underlying conditions. Cerebral palsy, muscular dystrophy, connective tissue disorders, and congenital spine anomalies all raise the risk.

It is important to know what does not cause scoliosis. Idiopathic scoliosis is not caused by poor posture, by carrying a heavy school bag, by sleeping position, by exercise, or by anything you as a parent did or did not do. Reassuring children — especially older ones who may feel self-conscious — on this point is part of supporting them through the diagnosis.

Signs You May Have Noticed

Many parents arrive at a scoliosis evaluation because they or a school nurse noticed one or more of the following:

• One shoulder higher than the other
• One shoulder blade that sticks out more
• An uneven waistline, or clothing that hangs unevenly
• One hip higher than the other
• The body leaning slightly to one side
• A visible hump on one side of the upper back or lower back when the child bends forward
• Bra straps or shirt collars that sit unevenly

Pain is not a typical early feature of adolescent idiopathic scoliosis. When a child has significant back pain alongside a curve, doctors usually investigate further to rule out other causes. In severe curves, especially in early-onset scoliosis, breathing capacity and stamina during exercise can be affected because the curve restricts how much the chest can expand.

If your child has been diagnosed, the appearance of the back may matter to them in ways that go beyond medicine. Teenagers in particular can feel self-conscious about asymmetry in changing rooms, swimwear, or photographs. This is worth acknowledging openly within the family and, where helpful, with the medical team.

How Pediatric Scoliosis Is Diagnosed

Diagnosis combines a physical examination, an estimate of skeletal maturity, and imaging. The aim is not just to confirm that scoliosis is present, but to measure it carefully and predict how likely it is to progress — because progression risk drives treatment decisions.

Physical Examination

The orthopaedic doctor will look at your child’s back from behind while they stand straight and again while they bend forward at the waist with arms hanging down. This is called the Adam’s forward bend test, and it makes any spinal rotation more visible as an asymmetric hump on one side of the back. The doctor also checks shoulder height, hip height, waistline symmetry, and leg length, and performs a basic neurological examination of strength, reflexes, and sensation.

Imaging

The main imaging study is a standing X-ray of the full spine, taken from the back and the side. From this X-ray the doctor measures the Cobb angle, identifies which vertebrae are at the top and bottom of the curve, and assesses skeletal maturity.

An MRI scan may be ordered if there are unusual features — for example, a left-sided thoracic curve, a curve in a very young child, neurological symptoms, or significant pain — because these can point to a problem within the spinal cord that needs to be identified before any treatment.

A CT scan is sometimes used for congenital scoliosis or for surgical planning in complex curves, where detailed bone anatomy matters.

What the Cobb Angle Tells You

Cobb angle is the single most useful number in scoliosis care. As a rough guide:

• 10–25 degrees: mild curve, usually monitored
• 25–45 degrees: moderate curve, often considered for bracing in growing children
• Above 45–50 degrees: larger curve, where surgery is commonly discussed

These thresholds are not rigid. The same Cobb angle can mean very different things in a child with years of growth ahead compared with a near-adult who has finished growing. Treatment decisions always combine the angle with growth potential and progression over time.

Treatment Approaches

Treatment for paediatric scoliosis sits on a spectrum. The three broad paths are observation, bracing, and surgery. Within each, choices are tailored to the child’s age, curve size, curve type, growth remaining, and any underlying condition. Physiotherapy and scoliosis-specific exercises are usually used alongside — not instead of — these main strategies.

Observation

For mild curves and for older adolescents whose growth is nearly complete, the orthopaedic team may simply monitor the spine over time. This typically involves a follow-up appointment every four to six months, with a new standing X-ray at each visit. The Cobb angle is compared with previous measurements. A change of about five degrees or more between visits is generally considered meaningful progression.

Observation is not “doing nothing.” It is an active strategy of catching progression early so that bracing or surgery can be introduced at the right time if needed. Many curves — particularly smaller ones in adolescents close to the end of growth — never progress beyond a size that requires intervention.

Bracing

Bracing is the main non-surgical treatment for moderate curves in children who still have growing to do. The goal of a brace is not to straighten the spine permanently. The goal is to prevent the curve from getting larger during the remaining years of growth, so that the child reaches skeletal maturity with a curve that is small enough not to need surgery.

The most common type is a thoracolumbosacral orthosis (TLSO), a custom-moulded plastic brace that fits under the arms and around the lower back. The Boston brace is a well-known example. For high thoracic curves, a Milwaukee brace with a neck ring may occasionally be used. For very young children with early-onset scoliosis, casting under anaesthesia — sometimes called Mehta casting — can be used to guide spinal growth.

The evidence for bracing in adolescent idiopathic scoliosis was strengthened significantly by the BRAIST trial (Bracing in Adolescent Idiopathic Scoliosis Trial), which showed that bracing substantially reduces the chance that a moderate curve will progress to the surgical range. A clear finding of that trial — and of subsequent practice — is that bracing works best when worn for the full prescribed number of hours per day, typically in the range of 16 to 23 hours depending on the prescription.

Practical realities matter here. Adolescents may find brace wear physically uncomfortable, emotionally difficult, and socially awkward. Open conversations with the orthotist and the orthopaedic team, modifications for fit, and acknowledging the emotional weight of brace wear all support better adherence. Bracing usually continues until the spine has stopped growing.

Scoliosis-Specific Physiotherapy

Structured physiotherapy programmes designed specifically for scoliosis — sometimes called PSSE (Physiotherapeutic Scoliosis-Specific Exercises), with the Schroth method being the best-known example — aim to improve posture, body awareness, breathing, and trunk strength. These programmes are often used alongside observation or bracing and may be continued after surgery as part of rehabilitation.

It is important to understand what physiotherapy can and cannot do. There is good evidence that it improves posture, comfort, and quality of life. It does not reliably reduce the structural curvature of the spine on X-ray. The medical community generally treats it as a useful adjunct, not a stand-alone alternative to bracing or surgery for curves that need those treatments.

When Surgery Is Considered

Surgery is generally considered when a curve has progressed, or is expected to progress, beyond what bracing can manage, or when the curve is already large at the point of diagnosis. The threshold most commonly discussed in adolescent idiopathic scoliosis is a Cobb angle above 45 to 50 degrees, although the exact threshold varies with the curve pattern, the child’s age, growth remaining, and underlying conditions. Surgery may also be considered for:

• Curves that continue to progress despite consistent brace wear
• Curves causing breathing difficulty or restricting lung development
• Severe deformity that significantly affects sitting balance, function, or quality of life — particularly in neuromuscular scoliosis
• Congenital curves with vertebral anomalies likely to cause progressive imbalance

The aims of surgery are to correct as much of the curve as is safely possible, to stop further progression, to keep the spine balanced over the pelvis, and where relevant to protect lung development. Surgery does not always — and is not always expected to — produce a perfectly straight spine. A safely corrected and stable spine is the goal.

Surgical Approaches

Several surgical options exist, and the choice depends largely on the child’s age and how much growth remains.

Posterior Spinal Fusion

Posterior spinal fusion is the most established operation for adolescent idiopathic scoliosis. The surgeon makes an incision down the back, places small screws into the vertebrae along the length of the curve, attaches two metal rods to those screws, and uses the rods to gently rotate and straighten the spine. Small pieces of bone (a bone graft) are then placed alongside the spine so that, over the following months, the involved vertebrae grow together into a single, solid bone — this is the “fusion.”

Once the fusion has healed, that section of the spine no longer bends, but the curve is held permanently in the corrected position. Most adolescents retain enough motion in the unfused parts of their spine to live full, active lives, including most sports. Surgery typically takes several hours, and a hospital stay of around four to seven days is common.

Anterior Spinal Fusion

In some curve patterns, the surgeon approaches the spine from the front or side of the body, often through the chest or abdomen, rather than from the back. This is less commonly used than posterior fusion but remains an option for selected curves. Surgical teams choose between approaches based on the curve shape, the child’s anatomy, and their own experience.

Growing Rod Systems

For younger children with early-onset scoliosis, a standard fusion would stop the spine and chest from growing — which can affect lung development. Growing rod systems are designed for this situation. Rods are anchored to the spine above and below the curve and are used to control the curve while allowing the spine to keep growing in length.

Traditional growing rods need to be lengthened periodically through repeated small operations, typically every six months or so, until the child is old enough for a definitive fusion.

Magnetically Controlled Growing Rods (MCGR)

Magnetically controlled growing rods reduce the need for repeated surgeries. The rods contain a small magnetic mechanism that can be lengthened in the clinic using an external magnetic device, without anaesthesia or an incision. This approach lowers the number of operations the child goes through during their growing years, although a final fusion operation is often still planned at the end of growth.

Vertebral Body Tethering (VBT)

Vertebral body tethering is a newer, growth-modulating approach. Instead of fusing the spine, the surgeon places screws along the convex (outer) side of the curve and connects them with a flexible cord. As the child continues to grow, the tether restricts growth on the convex side, allowing the concave side to catch up and gradually reducing the curve.

The major potential advantage is that the spine remains flexible. The technique is suitable only for selected patients — typically those with significant growth remaining and a flexible curve within a specific size range — and longer-term outcomes are still being studied. Surgical teams discuss whether a particular child is a candidate based on curve characteristics and growth status.

What the Day of Surgery and the Hospital Stay Are Like

Knowing what to expect can ease the run-up to surgery for both you and your child. Specifics vary between hospitals and between operations, but the broad pattern is similar.

Before surgery. Pre-operative tests usually include blood tests, an updated X-ray, and sometimes an MRI. The anaesthetic team reviews your child’s overall health and discusses pain control. You will be given fasting instructions for the night before.

During surgery. Your child will be under general anaesthesia and asleep throughout. The surgical team uses intraoperative neuromonitoring, which continuously checks the function of the spinal cord nerves during the operation. This is a major reason that the risk of serious nerve injury in modern scoliosis surgery is low. Posterior spinal fusion for adolescent idiopathic scoliosis typically takes several hours, depending on the curve.

The first day or two after surgery. Your child is monitored closely, sometimes in a high-dependency or intensive care unit for the first 24 hours. Pain is managed with a combination of medicines, including patient-controlled options for older children. A urinary catheter and drains are usually in place for the first day or two. Most children are helped out of bed to stand and take a few steps within two to three days.

The rest of the hospital stay. Over the following days, your child gradually transitions to oral pain medicines, eats and drinks normally, and works with a physiotherapist on walking, getting in and out of bed safely, and basic daily movements. Discharge home typically happens around day four to seven, depending on progress and the operation performed.

Recovery and Rehabilitation

The First 6 Weeks

Activity is gentle. Walking is encouraged and gradually increased. Heavy lifting, twisting, bending forward at the waist, and contact play are avoided. Most children can manage basic self-care and short walks within the first two to three weeks. Pain steadily improves; soreness around the back is normal for several weeks.

6 Weeks to 3 Months

Many children return to school during this period, often part-time at first. Schoolbag weight, transport, and time spent sitting at a desk are usually adjusted in consultation with the school. PE, sports, and any heavy or jolting activity remain restricted. Mild fatigue at the end of the day is common.

3 to 6 Months

Activity restrictions gradually ease. Light, non-contact sports such as swimming, cycling on flat ground, and brisk walking are typically introduced first, with the surgeon’s guidance. The fusion is consolidating during this period; X-rays at follow-up appointments are used to confirm progress.

6 to 12 Months

Most children are back to nearly all of their previous activities by around 6 to 12 months after surgery, depending on the operation and the sport. Contact sports and high-impact activities are usually the last to be reintroduced. By a year out, the fusion is generally well-healed and the spine is considered stable.

Physiotherapy After Surgery

Structured physiotherapy supports recovery by rebuilding core and back strength, restoring stamina, and helping your child feel confident moving again. It is usually started in hospital with simple bed and walking exercises and continues at home or in a clinic in the months afterwards.

Risks and Complications

All surgery carries risk, and parents are right to ask carefully about it. With experienced paediatric spinal teams, modern instrumentation, and intraoperative neuromonitoring, serious complications are uncommon. Risks that surgeons commonly discuss include:

• Infection at the surgical site, which may require antibiotics or, rarely, further surgery
• Bleeding during or after the operation
• Nerve injury, which is rare with modern monitoring but cannot be reduced to zero
• Problems with the implants — loosening, breakage, or prominence under the skin — which may require revision surgery
• Failure of the fusion to fully consolidate (pseudoarthrosis)
• Reactions to anaesthesia and standard post-operative risks such as blood clots
• Adjacent segment changes over many years, where vertebrae just above or below the fused area come under more stress

For early-onset scoliosis treated with growing rods, additional considerations include the need for repeat lengthening procedures (less so with magnetically controlled rods), the possibility of the spine becoming less flexible over time, and skin issues at the anchor sites. For vertebral body tethering, possible complications include tether breakage and over-correction or under-correction of the curve.

When choosing a surgical team, what experienced families and clinicians look for is straightforward: a surgeon and centre that perform paediatric spinal deformity surgery regularly, a team that includes paediatric anaesthesia and neuromonitoring, access to a paediatric intensive care unit, and a clear plan for follow-up and rehabilitation. It is reasonable — and often helpful — to meet more than one specialist before deciding.

Long-Term Outlook and Follow-Up

The long-term outlook for children with scoliosis is, on the whole, encouraging. Most adolescents with idiopathic scoliosis who do not require treatment live with stable, well-tolerated curves into adulthood. Those who are braced often avoid surgery. Those who undergo surgery typically maintain the correction long-term, return to active lives, and complete schooling, sports, work, and family life much as they would have otherwise.

What Follow-Up Looks Like

• Children under observation: follow-up every 4 to 6 months during periods of growth, then less frequently as growth slows
• Children in a brace: follow-up every several months to check the brace fit, curve, and skin
• Children after surgery: structured follow-up at set intervals (commonly 6 weeks, 3 months, 6 months, 1 year, and then yearly) with periodic X-rays

Once growth is complete and the curve is stable or the fusion is healed, follow-up usually becomes less frequent. Long-term, the spine continues to be a part of overall health: maintaining a healthy weight, staying active, and looking after bone health with adequate calcium and vitamin D all support good outcomes.

Pregnancy, Work, and Adult Life

Adolescents and parents often ask about adult life. In general, women who have had scoliosis surgery can carry pregnancies safely and have normal deliveries; specific decisions about anaesthesia are made with the obstetric team. Adults who had scoliosis as children participate in most sports and most occupations without restriction. Some report stiffness or occasional back discomfort, particularly later in life, which is often manageable with exercise and standard care.

Supporting Your Child Emotionally

The medical aspects of scoliosis sit alongside the emotional ones. A diagnosis can be unsettling, brace wear can feel isolating, and surgery is a significant event in a young person’s life. A few things help:

• Talk openly about the diagnosis in language your child understands. Avoid framing it as a fault or a failure of posture.
• Involve your child in conversations with the orthopaedic team as they get older. Adolescents who feel heard are more likely to stick with brace wear and engage with rehabilitation.
• Acknowledge the social side. Brace visibility under clothing, time off school for surgery, and visible asymmetry can all weigh on a young person. Connecting with other families or with peer-support groups can help.
• Encourage activity. Children with scoliosis benefit from being active. Specific restrictions before and after surgery are time-limited and can be discussed clearly with the team.
• Watch for signs of low mood or anxiety, and seek help if those become persistent. Mental health is part of recovery.

Frequently Asked Questions

Will my child’s scoliosis definitely get worse?

Not necessarily. Many small curves never progress to a size that requires treatment, especially in adolescents who are close to the end of their growth. The risk of progression is highest in younger children with larger curves and a lot of growth still ahead. This is why regular monitoring during growth is so important.

Did anything we did cause this?

Idiopathic scoliosis is not caused by posture, school bags, sleeping position, sports, or parenting. Genetics and growth biology play the largest known roles. Reassuring your child of this can lift a quiet burden they may otherwise carry.

Can exercises or yoga straighten my child’s spine?

Exercise, scoliosis-specific physiotherapy programmes such as the Schroth method, and yoga can improve posture, comfort, strength, and quality of life. They are not, on current evidence, a reliable way to reduce a structural curve on X-ray. They are best thought of as a useful part of overall care, alongside observation, bracing, or surgery as needed.

Does a brace cure scoliosis?

A brace does not straighten the spine permanently. Its role is to prevent a moderate curve from getting larger during the remaining years of growth, so that the child reaches skeletal maturity with a curve small enough not to need surgery. Bracing works best when worn for the full number of hours prescribed.

Will my child have to wear a brace forever?

No. Bracing is used during the growing years. Once the spine has stopped growing, the brace is typically discontinued.

Is scoliosis surgery safe?

Modern paediatric scoliosis surgery, performed by experienced teams using intraoperative neuromonitoring, has a strong safety record. Like any major surgery, it carries risks, which the surgical team will discuss with you in detail. Asking about the surgeon’s and the centre’s experience with paediatric spinal deformity is reasonable and welcomed.

Will my child be able to play sports after surgery?

In most cases, yes. After full recovery and medical clearance, children typically return to a wide range of activities including most non-contact and many contact sports. Specific timelines and any sport-specific advice should come from your surgical team.

Will my child still grow normally after spinal fusion?

The fused section of the spine no longer grows in length, but the rest of the spine and the arms and legs continue to grow as expected. For adolescents who are close to the end of their growth at the time of surgery, the effect on final height is usually small. For younger children, growing rod systems and growth-modulating techniques are designed specifically to preserve growth.

Will the implants need to be removed later?

In most cases, the rods and screws are designed to stay in place permanently and do not need to be removed. Removal is occasionally considered if implants cause discomfort or other problems.

Can scoliosis come back after surgery?

Once the fusion has healed, the fused section of the spine is held in its corrected position. Small changes over many years can occur in the unfused sections, but a true return of the original curve in a successfully fused spine is uncommon. Regular long-term follow-up monitors for any changes.

Conclusion

Paediatric scoliosis covers a wide range of situations — from a small curve found at a school check that simply needs monitoring, to an early-onset curve that needs careful management of both spine and lung development, to an adolescent curve treated with a brace or surgery. What unites all of these is that careful evaluation, attention to growth, and a treatment plan matched to the individual child make a real difference to long-term outcomes.

If your child has been newly diagnosed, the most useful next steps are to understand the size and type of the curve, the amount of growth remaining, and the plan the orthopaedic team is proposing. Asking questions, taking time to understand the options, and where helpful seeking a second opinion are all reasonable parts of the process. With the right care during the growing years, the great majority of children with scoliosis go on to live full, active, healthy adult lives.