Skip to main content
  • Oral presentation
  • Open access
  • Published:

Curve pattern changes in idiopathic scoliosis


Ponseti and Friedman suggest that curve type is genetically determined and that curve types do not change throughout its course. Nowadays, we see scoliosis as a more dynamic process. Therefore we ask ourselves can the natural history of idiopathic scoliosis can change during growth when the scoliosis is not treated.


The goal of this study was to assess curve pattern changes in patients with idiopathic scoliosis who were not treated.

Materials and methods

Forty eight patients were monitored who were not treated and had an idiopathic scoliosis. Curve pattern changes were classified according the SRS.


Forty eight patients (11 boys and 37 girls; 13 patients younger than 10 years and 35 patients older than 10 years) were monitored for a mean follow-up of 3 to 4 years. 8 patients (17%) showed changes in curve patterns. Six of these patients were younger than 10 years, while 2 patients were older than 10 years. There was no correlation between the curve severity and the curve pattern changes. We found no significant difference between the male and female patients. Single curves changed in double curves and vice versa during growth in 70% younger than 10 years and 18% older than 10 years.


In this study, changes in curve patterns suggest that idiopathic scoliosis is not a fixed deformity, but a dynamic process especially in patients younger than 10 years.


  1. Ponseti IV, Friedman B: Prognosis in idiopathic scoliosis. J Bone Joint Surg Am. 1950, 32A: 381-395.

    CAS  PubMed  Google Scholar 

  2. Van Rhijn LW, Plasmans CM, Veraart BE: Changes in curve pattern after brace treatment for idiopathic scoliosis. Acta Orthop Scand. 2002, 73: 277-81. 10.1080/000164702320155248.

    Article  PubMed  Google Scholar 

  3. Miller NH, Justice CM, Marosy B: Familial idiopathic scoliosis: evidence of X-linked susceptibility locus. Presented at: The Scoliosis Research Society 36th Annual Meeting; Cleveland, Ohio. 2001

    Google Scholar 

  4. Cowell HR, Hall JN, MacEwen GD: Genetic aspects of idiopathic scoliosis. A Nicholas Andry Award essay, 1970. Clin Orthop. 1972, 86: 121-31. 10.1097/00003086-197207000-00018.

    Article  CAS  PubMed  Google Scholar 

Download references

Author information

Authors and Affiliations


Rights and permissions

Open Access This article is published under license to BioMed Central Ltd. This is an Open Access article is distributed under the terms of the Creative Commons Attribution 2.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and permissions

About this article

Cite this article

Hermus, J., vd Berg, F., Guldemond, N. et al. Curve pattern changes in idiopathic scoliosis. Scoliosis 4 (Suppl 1), O13 (2009).

Download citation

  • Published:

  • DOI: