İn order to set forth a treatment plan of idiopathic scoliosis, predictors of progression should be known. Progres-sion factors are well studied in the literatüre, however, stili one can not pre-determine precisely vvhich curve will progress or up to what extent it will progress. Family history, height-vveight ratio, lumbosacral transitional anomal-ies, thoracic kyphosis, lumbar lordosis, balance are found to be non-prognostic factors, whereas, gender, curve pattern, curve severity, age at diagnosis, menarch, Risser sign are considered as prognostic factors. The most im-portant of these are, curve magnitude, Risser sign, skeletal age at diagnosis.
Theories concerning the etiology and pathogenesis of idiopathic scoliosis are numerous. As yet, none is proven to be correct. Recent well accepted concepts are bipianar asymmetry (Leeds group) and Nottingham concept based on the "pathology" of Central pattern generators of central nerveous system.
İn this revievv article, issues of progression and etio-pathogenesis are undertaken.
Keywords: Progression factors, bipianar asymmetry, Nottingham concept.