A mother watches her daughter trying on a dress and notices something: one shoulder seems higher than the other, and the waist isn’t quite symmetrical. Or perhaps it’s you, a little older now, and your lower back complains every afternoon while someone mentions, almost in passing, the word “scoliosis”. In both cases the same flood of doubts arrives: is it serious? did I do something wrong? can it be straightened?
Let’s shed some light, because few spinal conditions carry so many myths. Scoliosis isn’t what many people think — and understanding what it really is is the first step to making good decisions.
What is scoliosis (and what is it NOT)?
Scoliosis is a three-dimensional deviation of the spine: seen from the front on an X-ray, instead of a straight line it draws an “S” or a “C”. To speak of scoliosis, that curve must measure at least 10 degrees (the so-called “Cobb angle”). And there’s a key detail: the vertebrae don’t just tilt, they also rotate on themselves.
Here’s the first myth worth throwing in the bin: scoliosis is not “bad posture”. It isn’t caused by sitting crookedly and isn’t corrected by “sitting up straight”. It’s a structural condition of the spine, and that completely changes how it’s approached.
Not all scoliosis is the same
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Depending on its origin, several types are distinguished:
| Type | When it appears | Detail |
|---|---|---|
| Idiopathic | Mainly in adolescence | The most common (>80%); exact cause unknown |
| Congenital | From birth | Due to vertebral malformations |
| Neuromuscular | Associated with another illness | Cerebral palsy, muscular dystrophy… |
| Adult degenerative | After 50, “de novo” | Due to asymmetric wear of discs and joints |
The main protagonist is adolescent idiopathic scoliosis: it appears during the growth spurt and, although “idiopathic” sounds worrying, it simply means there’s no single identifiable cause.
Why does it appear? Neither backpacks nor sports
Time to dismantle the most widespread myths, because they generate a lot of unnecessary guilt, especially in families.
Idiopathic scoliosis is not caused by heavy backpacks, nor by sleeping on one side, nor by a particular sport, nor by sitting badly. What it does have is a strong genetic component: it’s common for there to be several cases in the same family. A loaded backpack can cause back pain, true, but it doesn’t create the structural deformity of scoliosis.
Did you know…? Small curves appear almost equally in boys and girls, but girls have a much higher risk of the curve progressing: in curves above 40 degrees, the ratio can reach 7 girls to every boy.
How is it detected? Signs and the Adam’s test
In children and adolescents, scoliosis usually doesn’t hurt, and that’s why it goes unnoticed. The clues are visual:
- One shoulder higher than the other.
- A more prominent shoulder blade.
- Uneven waist or hips.
- The trunk slightly shifted to one side.
The star test is simple and you may have seen it at school: the Adam’s test. When bending forward with legs together and arms hanging, if there’s scoliosis a small “hump” appears on one side of the back — it’s the rotation of the ribs becoming visible.
In adults the story changes: here the main symptom is usually back pain and stiffness, sometimes with pain radiating to the leg.
The diagnosis: the Cobb angle
Confirmation comes with an X-ray of the whole spine, where the specialist measures the Cobb angle. That number defines the severity and guides everything else:
- Mild: 10–25 degrees.
- Moderate: 25–45 degrees.
- Severe: more than 45–50 degrees.
It’s not a technical whim: the degree of the curve, together with how much growth the patient has left, is what determines the treatment.
Treatment: it depends on the curve and on growth
There isn’t a single scoliosis treatment, but rather the right one for each case. The decision revolves around two questions: how big is the curve? and how much growth is left?
- Observation. In mild curves, or in patients who have already finished growing, the right approach is usually to monitor with periodic check-ups. Not over-treating is also good medicine.
- Brace (orthosis). For moderate curves in patients who are still growing, it’s the treatment of choice and with solid evidence: the BrAIST study (published in the New England Journal of Medicine, 2013) clearly showed that the brace reduces the risk of the curve progressing to the point of needing surgery. Its success depends greatly on the hours it’s worn each day. Note this important nuance: the goal of the brace is not to straighten the curve, but to halt its progression during growth.
- Surgery (fusion). It’s reserved for severe curves (above 45–50°) that keep progressing. It corrects and stabilises the spine by fusing vertebrae.
The role of exercise: scoliosis-specific physiotherapy (PSSE)
Here a very interesting tool comes into play: scoliosis-specific physiotherapy exercises (PSSE), among which the Schroth method stands out. These aren’t “generic gymnastics”: they’re programmes designed to work on the curve in three dimensions.
The guidelines of the leading international society (SOSORT) recommend them as a first step in mild curves and as a complement to the brace to improve posture and adherence. The evidence is promising — they can help limit progression and improve quality of life — although rigorous reviews such as those by Cochrane remind us that more high-quality research is still needed to draw firm conclusions. Honesty first: they help, but they’re not magic.
What does NOT correct the curve (let’s be clear)
This part is uncomfortable but necessary, because a lot of exaggerated promises circulate. There’s no solid evidence that chiropractic or osteopathy correct or halt a structural scoliosis. They can help manage the associated back pain, improve mobility or treat non-structural postural imbalances — and that has value — but presenting them as a “cure” for scoliosis doesn’t hold up scientifically.
Put plainly: be wary of anyone who guarantees they’ll straighten a structural curve with manipulation sessions. Relieving discomfort and improving your day-to-day is one thing; correcting the deformity is something quite different.
Quick summary — what each thing does
| Goal | Tool with evidence |
|---|---|
| Halt progression during growth | Brace (moderate curves) |
| Work on the curve with exercise | PSSE / Schroth (complement) |
| Correct severe curves | Surgery (fusion) |
| Relieve the associated pain | Physiotherapy, exercise, manual therapy |
Scoliosis in adults: the focus is on pain
In adulthood, the priority is rarely the angle of the curve: it’s living well and pain-free. Initial treatment is almost always conservative — physiotherapy and exercise to strengthen the trunk and improve posture, occasional pain relief and, in selected cases, injections for radiating pain. Surgery is reserved for disabling pain or neurological deficit that don’t respond to other measures.
In summary
Let’s return to that scene at the mirror, to the slightly higher shoulder and to the word that set off all the alarms. Now you see it with different eyes: scoliosis is nobody’s fault, it wasn’t caused by a backpack or by bad posture, and it’s rarely the catastrophe the initial fright suggests. Most mild curves don’t progress or cause problems; those that do have well-evidenced treatments according to age and severity.
The most important thing is not to fall into extremes: neither minimising a curve that’s growing in the middle of adolescence, nor dramatising a mild deviation that only needs monitoring. Between fear and false promise there’s a sensible path, and it almost always runs through a good assessment.
Questions about a scoliosis, your own or your child’s? At Clínica QO (Alicante) we assess the curve, explain to you without alarmism what it means and design an honest plan — exercise, follow-up and referral when needed — in your language.
Frequently asked questions
Is scoliosis corrected by sitting up straight or with good posture?
No. Scoliosis is a structural deviation of the spine, not bad posture. “Sitting up straight” doesn’t correct it, although working on posture and muscle strength can indeed help with pain and function.
Is it caused by heavy backpacks?
No. Idiopathic scoliosis isn’t caused by backpacks, sports or sleeping on one side. It has a strong genetic component. A heavy backpack can cause back pain, but it doesn’t create the deformity.
Does the brace straighten the spine?
That’s not its goal. In patients who are still growing with moderate curves, the brace serves to halt the progression of the curve, and its effectiveness in avoiding surgery is well supported by the evidence.
Is exercise of any use?
Yes, as a complement. Scoliosis-specific exercises (PSSE, such as the Schroth method) can help limit progression and improve quality of life, although research continues into which is the best protocol.
Do chiropractic or osteopathy cure scoliosis?
There’s no solid evidence that they correct a structural scoliosis. They can help with pain or mobility, but they shouldn’t be presented as a cure for the curve.
Is adult scoliosis always operated on?
No. In adults the focus is on pain and quality of life, and most are managed conservatively with physiotherapy and exercise. Surgery is reserved for severe cases that don’t respond.
Sources and reference guides
- SOSORT — Guidelines for the orthopaedic and rehabilitation treatment of idiopathic scoliosis: https://www.sosort.org/
- Weinstein SL et al. — Effects of Bracing in Adolescent Idiopathic Scoliosis (BrAIST), NEJM 2013: https://www.nejm.org/doi/full/10.1056/NEJMoa1307337
- Cochrane Library — exercise/PSSE for adolescent idiopathic scoliosis: https://www.cochranelibrary.com/
- Scoliosis Research Society (SRS): https://www.srs.org/
