Some curves change after growth ends and some do not. Larger curves and certain spine features may be linked to more change. In long-term studies of untreated adults followed after they stopped growing, curves changed on average by a fraction of a degree to just under one degree per year. Larger thoracic curves tended to change more. These studies may not describe change during growth, and individual courses vary, so regular monitoring by a clinician remains important. Adult curves can also arise with age-related disc and joint wear. The research gives averages and associations, not a forecast for one person, so discuss your own situation with your clinician.
This page is for adults, and for parents of teens, who ask whether scoliosis keeps changing once growth is over. We rely on long-term follow-up studies and reviews indexed in PubMed, and we say where the evidence is thin. Our own work comes last and is labelled as ours.
Quick answers
| Question | Short answer | Evidence tier |
|---|---|---|
| Do curves change after growth ends? | Some do and some do not. In a long-term follow-up of untreated curves, about two thirds progressed after growth ended, and curves under 30 degrees at maturity tended not to | Observed in one long-running series [T2] |
| Does curve size or shape matter? | Larger curves and certain spine features may be linked to more change. In that series, thoracic curves of 50 to 75 degrees at maturity progressed the most. Those degree cut-offs describe the series and are not firm lines for any one person | Association [T2]; cut-offs [T4] |
| How fast does it change? | In long-term studies of untreated adults followed after they stopped growing, curves changed on average by a fraction of a degree to just under one degree per year. Larger thoracic curves tended to change more. These studies may not describe change during growth, and individual courses vary, so regular monitoring by a clinician remains important. Smaller adult studies have found faster change in some late-onset curves and in some degenerative lumbar curves, so no single figure fits every adult. | Averages [T2]; larger thoracic curves [T2]; individual variation [T4]; adult studies [T4] |
| Can adult curves arise with age? | Yes. Uneven wear of discs and facet joints, and sideways slipping of one vertebra on another, are linked to adult curves and to change | Described in reviews [T2]; how much each matters [T4] |
| Can anyone predict what my curve will do? | Not from this research. Individual prediction is not known | Unknown [T4] |
| Does any non-surgical approach change the adult course? | Not known | Unknown [T4] |
| Is the Neural Generation Hypothesis about adult change? | No. It is our hypothesis about how a curve may begin, and it is untested | Synthesis [T3] |
How to read the evidence tiers: T1 independently replicated research, stated directly. T2 frontier research or clinical synthesis, sound but not yet unified, so one degree of hedging. T3 theoretical synthesis or our own contribution, always framed as synthesis. T4 unknown or mixed evidence. T5 an anti-pattern we recommend against. A compound claim gets a tier per part.
Where to start
This page cannot tell you what your own curve will do; that is a conversation for your clinician. What you can learn is how your body senses and organizes itself day to day, and the Syntropic Core Reset, a one-month course with live sessions, is the place to start. You practice noticing breath, pressure and ground contact, and build awareness of your own posture.
Education, not treatment. It is meant to sit alongside your clinical care, never as a reason to skip monitoring, bracing or surgery.
What the research shows
Some curves change after growth ends, and some do not
The best-known long-term data come from a University of Iowa series of untreated patients first seen between 1932 and 1948 (Weinstein 1981) [T2]. In a follow-up of 133 curves in 102 patients, with an average follow-up of about 40 years, 68% of curves had progressed after skeletal maturity, and curves under 30 degrees at maturity tended not to progress (Weinstein 1983) [T2]. Thoracic curves of 50 to 75 degrees at maturity progressed the most (Weinstein 1983; Asher 2006) [T2]. A US Preventive Services Task Force statement likewise describes the likelihood of progression in adulthood as small for curves under 30 degrees at skeletal maturity (USPSTF 2018) [T2]. So larger curves, and certain features such as a thoracic location, may be linked to more change.
Two cautions apply. The patients were seen between 1932 and 1948, and Asher and Burton describe selection biases in the series (Asher 2006) [T2]. And the degree cut-offs describe that group, not a line that applies to any one person [T4].
How fast does it change?
In long-term studies of untreated adults followed after they stopped growing, curves changed on average by a fraction of a degree to just under one degree per year. (averages: Ascani 1986; Asher 2006) [T2] Larger thoracic curves tended to change more (Weinstein 1983; Asher 2006). [T2] These studies may not describe change during growth, and individual courses vary, so regular monitoring by a clinician remains important. [T4] Smaller adult studies have found faster change in some late-onset curves and in some degenerative lumbar curves, so no single figure fits every adult (Marty-Poumarat 2007; Seo 2011; both abstract only). [T4]
Source note: the average change is for all untreated curves in an Italian series, followed after maturity (Ascani 1986, abstract only). The finding that single thoracic curves of 50 to 75 degrees changed most is from the Iowa series (Weinstein 1981/1983, as summarised in Asher 2006).
An average describes a group, not you, and individual courses vary [T4].
Adults can also develop a curve with age-related wear
A curve can arise in adulthood, with no teenage history, when discs and facet joints (the small joints at the back of the spine) wear unevenly. Aebi’s review describes primary degenerative scoliosis as arising mostly from asymmetric disc and facet-joint arthritis (Aebi 2005) [T2]. A comprehensive review of adult scoliosis describes asymmetric forces and disc changes, and lists sideways slipping of one vertebra on another (lateral listhesis) among the features linked to progression (Coşkun 2025) [T2]. How much each factor matters for a given person is not settled [T4].
What is not known
- Individual prediction. The research gives averages and associations, not a forecast for one person [T4].
- How far the findings carry over. The best-known long-term data come from patients seen between 1932 and 1948. How well they match other cohorts is not known [T4].
- Whether any non-surgical approach changes the adult course. We did not find evidence that settles this either way [T4].
Where our framework fits
The follow-up studies above are careful, long-running work. They show that the shape of a spine on an X-ray can change in adulthood, that discs and joints can wear unevenly, and that mechanical load is part of that picture. We do not dispute any of it.
What those studies measure is the output: degrees, slips and wear. They were not designed to ask how a pattern is generated in the first place, and none of them tests our hypothesis.
Hypothesis, not established fact. Everything in this section is our hypothesis. It is published as an open-access preprint on Zenodo, which means it has not been through journal peer review. It makes no claim about what happens to a curve in adulthood, no claim that any intervention changes an established curve, and it was not built to predict anyone’s course. It is not a reason to skip monitoring, bracing or surgery.
The Neural Generation Hypothesis (NGH, Miller 2026) is about how a curve may begin. It proposes that scoliosis is a curve the body keeps generating from its own map of itself, not just a bent bone [T3]. What happens to a curve after it exists is a separate question, and it is the one the follow-up studies on this page address. You can read the full hypothesis, with its evidence tiers, in our article on the Neural Generation Hypothesis.
What this means for you
- Follow your clinical team’s advice on monitoring, bracing and surgery. Nothing on this page is a reason to delay or decline any of them.
- If your curve was found in youth, ask your clinician what follow-up makes sense for you.
- If you notice a change, such as new back pain, leg numbness or weakness, or a change in how you stand or walk, tell your clinician.
Frequently asked questions
Does scoliosis get worse with age?
Some curves change after growth ends and some do not. Larger curves and certain spine features may be linked to more change. In long-term studies of untreated adults followed after they stopped growing, curves changed on average by a fraction of a degree to just under one degree per year. Larger thoracic curves tended to change more. These studies may not describe change during growth, and individual courses vary, so regular monitoring by a clinician remains important.
Do curves keep changing after growth ends?
In a long-term follow-up of untreated curves, about two thirds progressed after skeletal maturity, and curves under 30 degrees at maturity tended not to. The series is old and has selection biases, so it describes a group and not any one person.
How fast can a curve change in adulthood?
In long-term studies of untreated adults followed after they stopped growing, curves changed on average by a fraction of a degree to just under one degree per year. Larger thoracic curves tended to change more. These studies may not describe change during growth, and individual courses vary, so regular monitoring by a clinician remains important. Smaller adult studies have found faster change in some late-onset curves and in some degenerative lumbar curves, so no single figure fits every adult. An average does not tell you what your own curve will do.
Can scoliosis start in adulthood?
A curve can arise in adulthood with age-related wear of the discs and facet joints. Reviews describe this as degenerative scoliosis.
Will my curve get worse?
Nobody can say that from research alone. The studies give averages for groups. Your clinician, who can examine you and see your imaging, is the right person to discuss your own situation with.
What should I do if I think my curve is changing?
Tell your clinician and follow your clinical team’s advice on monitoring, bracing and surgery. Nothing on this page is a reason to delay or decline any of them.
This article is education and research, not medical advice. Sam Miller is not a doctor, physical therapist or licensed clinician, and Syntropic Core is somatic education, not treatment. If you have a diagnosed spinal condition, have had spinal surgery, are pregnant, or are the parent of a teen whose curve is being monitored, talk to your clinical team first. Nothing here is a reason to delay or decline a brace, surgery or the check-ups that track a curve.
Sources
- Weinstein SL, Ponseti IV. Curve progression in idiopathic scoliosis. J Bone Joint Surg Am 1983;65(4):447-455. PubMed 6833318 [T2]
Iowa series, as summarised in Asher 2006: single thoracic curves of 50 to 75 degrees changed most; 68% of 133 curves increased. Curves under 30 degrees at maturity tended not to progress. Read at abstract level. - Weinstein SL, Zavala DC, Ponseti IV. Idiopathic scoliosis: long-term follow-up and prognosis in untreated patients. J Bone Joint Surg Am 1981;63(5):702-712. PubMed 6453874 [T2]
Describes the University of Iowa series of untreated patients seen between 1932 and 1948 (see also Weinstein 1983 and the Asher 2006 summary: single thoracic curves of 50 to 75 degrees changed most; 68% of 133 curves increased). Read at abstract level. - Asher MA, Burton DC. Adolescent idiopathic scoliosis: natural history and long term treatment effects. Scoliosis 2006;1:2. PMC1475645 doi:10.1186/1748-7161-1-2 [T2]
Review that summarises the Iowa series (single thoracic curves of 50 to 75 degrees changed most; 68% of 133 curves increased) and notes selection biases. Full text read. - Ascani E, et al. Natural history of untreated idiopathic scoliosis after skeletal maturity. Spine 1986;11(8):784-789. PubMed 3810293 doi:10.1097/00007632-198610000-00007 [T2]
Average change in all untreated curves in an Italian series, followed after maturity (abstract only). - Marty-Poumarat C, Scattin L, Marpeau M, Garreau de Loubresse C, Aegerter P. Natural history of progressive adult scoliosis. Spine 2007;32(11):1227-1234. doi:10.1097/01.brs.0000263328.89135.a6 [T4]
Retrospective series of adults with progressive scoliosis. Abstract only; no figures from it are used on this page. Cited for the late-onset wording. - Seo JY, Ha KY, Hwang TH, Kim KW, Kim YH. Risk of progression of degenerative lumbar scoliosis. J Neurosurg Spine 2011;15(5):558-566. doi:10.3171/2011.6.SPINE10929 [T4]
Small follow-up of 27 adults with degenerative lumbar scoliosis. Abstract only; no figures from it are used on this page. Cited only for the clause that some degenerative lumbar curves have changed faster. - Aebi M. The adult scoliosis. Eur Spine J 2005;14(10):925-948. PubMed 16328223 doi:10.1007/s00586-005-1053-9 [T2]
Review describing primary degenerative scoliosis from asymmetric disc and facet-joint arthritis. Read at abstract level. - Coşkun E, Bucak ÖF. A comprehensive review of adult scoliosis: advances in pathogenesis, diagnosis, and management strategies. Turk J Phys Med Rehabil 2025;71(4):417-426. PMC12914251 doi:10.5606/tftrd.2025.16476 [T2]
Review describing asymmetric forces, disc changes and lateral listhesis in adult scoliosis. Full text read. - US Preventive Services Task Force. Adolescent idiopathic scoliosis: screening. Final recommendation statement, 2018. uspreventiveservicestaskforce.org Accessed 27 October 2026. [T2]
Used only for the statement that the likelihood of progression in adulthood is small for curves under 30 degrees at skeletal maturity. - Miller S. The Neural Generation Hypothesis of Adolescent Idiopathic Scoliosis: Converging Evidence from Genetics, Proprioception, and Predictive Coding. Open-access preprint on Zenodo, not journal peer-reviewed. doi.org/10.5281/zenodo.19342098 [T3]
Our own hypothesis, listed last and labelled as ours. It is not used as evidence for any claim above.