Failure of formation deformity can present with 30o - 60o degree deformities. With the rapid growth of the skeleton in the first year of life, progression is highly likely. Failure of separation (segmentation) deformity has a slower rate of worsening and may not become a surgical curve until adolescence.
The Scoliosis Research Society provides information on these web pages regarding research and links as a public service. The SRS believes that patients should contact their treating physician about the relevance of any information listed on the site prior to proceeding with any particular treatment. Just as no two individuals are exactly alike, no two patients with a spinal deformity are the same. Therefore, your spinal deformity surgeon will be the most important source of information about the management of your particular spinal problem.