
Skolios [< Gr. Σκολιóς >]: crooked, humped.
Scoliosis impacts infants, adolescents, and adults worldwide with little regard to race or socio-economic status. The primary age of onset for scoliosis is 10-15 years old, occurring equally among both genders. However, females are eight times more likely to progress to a curve magnitude that requires treatment.
Structural scoliosis is develops as a result of unequal growth of the two sides of the vertebral bodies. Usually appearsduring adolescence. Functional (Non-structural) scoliosis only affects the muscular back and does not alter the body structurally. It is much more common than structural scoliosis, and usually much less noticeable, since the degree of curvature is less and almost always reversible.
85% of the cases are classified as idiopathic. That is, a scoliosis patient's life is exacerbated by many unknowns, and treatments therefore that are often ineffective, invasive, and/or costly.
In idiopathic scoliosis, not only the cause of the development is unknown, but also the progress of the condition (i.e. how far the spine will deviate from the middle line). The choice of treatment is mainly based on the patient's age, degree of curvature, as well as the physician/specialist's vision and background of practice.
Scoliosis can impact the quality of life with limited activity, pain, reduced respiratory function, or diminished self-esteem.

The treatment of scoliosis depends on the location and degree (severity) of curvature, and should take into account the risk of progression of the deformity. Slight curves (curves measuring less than 20 degrees), usually require no treatment, but must be watched carefully for worsening during growth.