Many important developments occured in idiopatic scoliosis surgery at last 20 years, as modern segmenter systems with multipl hook and transpedicular screws were used after understanding the three dimentional pathology of the disease. The main correction force in Harrington rod system which was the "corner stone" of treatmant of idiopathic scoliosis was distraction. The most popular one of the 3rd generation systems in the world was Cotrel Dubousset instrumentation system. This system was using derotation maneuver as correction force and it was correcting the curve with turning the rod that was bent and placed similar to curve to the concave site of the curve. Although there were several articles that reported high correction rates with CD system and its modifications, some studies reported that it had negative effects on body equilibrium. At early 1990’s, new systems as ISOLA and USS were started to use to transvers the curve to midline to eliminate this problem. Since 2000, the 3rd generation modern systems disappeared from the market, and there was not any new developments occured. At these years, articles about the long term results and satisfaction rates of the patients published. Additionally, some articles about all segment screw fixation described by Harms et al., and stronger correction occured by combination and translation described by Benli et al. published at these years. Despite unproductive period of surgical correction of idiopathic scoliosis for recent years, ne w developments will be expected.

Keywords: Idiopathic scoliosis, surgical treatment, instrumentation, distraction, derotation, augmentation