Quick answer. Scoliosis is a sideways curvature of the spine of 10 degrees or more, measured as the Cobb angle on an X-ray. The most common type is adolescent idiopathic scoliosis, which has no known cause and can progress during the growth spurt of puberty. Singapore runs a national school screening programme using the Adam’s forward bend test, referring children to the Health Promotion Board for assessment. Mild curves are simply monitored, moderate curves in growing children may need a brace worn around 18 hours a day to slow progression, and larger curves may require surgery. Backpacks and poor posture do not cause idiopathic scoliosis.
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Scoliosis is a sideways (lateral) curvature of the spine measured by the Cobb angle on an X-ray, with a curve of 10 degrees or more meeting the definition. The most common form in teenagers is adolescent idiopathic scoliosis (AIS) – “idiopathic” meaning there is no identified cause. It typically appears around puberty and can worsen during the rapid growth spurt, which is why early detection matters.
Singapore has run a national school-based screening programme since the early 1980s to pick up scoliosis early, when monitoring or bracing can still influence its course. This guide explains the screening pathway, how curves are graded, when to observe versus brace versus operate, when to refer, and the common posture and backpack myths.
At a glance
| Cobb angle | Typical approach | Notes |
|---|---|---|
| 10-19 degrees | Observation | Monitor every 4-6 months in growing children; many never progress |
| 20-40 degrees | Bracing (if still growing) | Aims to slow or stop progression during remaining growth, not to reverse the curve |
| 45 degrees and above | Surgery considered | Especially in skeletally immature patients; larger or progressing curves in older teens |
What scoliosis is
Scoliosis is a structural sideways curve of the spine, often with some rotation, giving an “S” or “C” shape rather than a straight vertical line. A curve is defined as scoliosis once the Cobb angle reaches 10 degrees on a standing X-ray. Adolescent idiopathic scoliosis is the most common type and arises during the growing years with no known cause; it is more likely to progress in those who are still growing and is more common in girls.
Singapore's school screening programme
Singapore has screened schoolchildren for scoliosis since the early 1980s as part of routine school health checks. Screening uses visual inspection and the Adam’s forward bend test, often with a scoliometer to measure trunk rotation. Children with significant rotation are referred to the Health Promotion Board (Student Health Centre) for further assessment, including X-rays if needed, and on to an orthopaedic surgeon if scoliosis is confirmed, particularly in those still growing. In Singapore schoolgirls, AIS prevalence is roughly 1-2%, rising with age.
How curves are measured and monitored
The Cobb angle measured on a standing spine X-ray is the standard way to grade severity and track change over time. Skeletal maturity (for example, the Risser sign and stage of growth) is also assessed, because curves are most likely to progress while a child is still growing. Mild curves under 20 degrees are usually just monitored, often every 4-6 months, as many do not progress significantly.
Bracing versus surgery
- Bracing: typically considered for curves around 20-40 degrees in children who are still growing. A thoraco-lumbo-sacral orthosis (TLSO) is commonly used and is generally worn for around 18 hours a day. Bracing aims to slow or stop progression during remaining growth; it does not straighten a curve that is already present, and children are encouraged to stay active and continue sports.
- Surgery: considered for larger curves (commonly from about 45 degrees in skeletally immature patients, or larger curves in older teens) to correct deformity and halt progression. The usual procedure is posterior spinal fusion with instrumentation.
When to refer or seek review
See a doctor or seek specialist referral if you notice:
- Uneven shoulders, a prominent shoulder blade, an uneven waistline, or a rib hump when bending forward.
- A curve detected on school screening or by a GP, particularly in a child who has not yet finished growing or in a premenarchal girl (higher progression risk).
- Red flags such as significant or worsening back pain, leg weakness or numbness, or changes in bladder or bowel control – these warrant prompt medical review as they may point to a non-idiopathic cause.
Posture and backpack myths
A common worry is that bad posture or a heavy school bag causes scoliosis. In fact, idiopathic scoliosis is not caused by poor posture, carrying a heavy backpack, sleeping position, or sports, and you cannot “correct” a true structural curve simply by sitting up straight. Good posture and a sensibly packed bag are healthy habits, but they neither cause nor cure idiopathic scoliosis. Genuine treatment depends on the size of the curve and how much growing is left.
Living with a brace and staying active
If your child is advised to wear a brace, the early weeks are usually the hardest as the skin and routine adjust. A few practical habits help: wear a thin, seamless cotton vest under the brace to protect the skin, check for rubbing or red marks daily, and build up wearing time as advised rather than all at once. Most braces are designed to be worn under loose clothing and removed for sports, showering and the recommended out-of-brace hours. Children are encouraged to keep playing sport and exercising, which is good for general health and morale. Bracing can feel discouraging, so acknowledging that and keeping follow-up appointments makes a real difference.
Questions worth asking the doctor
- How large is the curve now, and how much growing is left?
- Are we observing, bracing or considering surgery, and why?
- If bracing, how many hours a day and for how long?
- What signs of progression should prompt an earlier review?
- Which activities and sports are encouraged or best avoided?
Common questions
Does my child need an X-ray at every visit?
Not necessarily. The doctor balances the value of tracking the Cobb angle against limiting radiation, and will space X-rays according to growth and how the curve is behaving.
Will a brace straighten the spine?
A brace aims to slow or stop a curve from worsening while a child is still growing; it is not designed to reverse a curve that is already present.
Can exercises alone fix scoliosis?
Exercise supports general fitness and posture but does not correct a true structural curve. Treatment depends on the size of the curve and remaining growth.
Related guides
- Best Orthopaedic Clinics in Singapore — our editorial shortlist
- orthopaedic clinics directory
- Carpal tunnel syndrome
- Tennis & golfer's elbow
- Trigger finger
Sources
- SingHealth – Adolescent Idiopathic Scoliosis and What GPs Should Know
- National University Hospital – Scoliosis
- HealthHub – Health Screening for Primary School
- Health Promotion Board (HPB) – Student Health Centre / School Health Service
Related conditions & guides
Related conditions and guides you may find useful:
- Back Pain Treatment in Singapore
- Neck Pain and Slipped Disc (Cervical) in Singapore
- Sciatica in Singapore
See also: our directory of spine surgeons in Singapore.
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