Deformity surgery is one of the toughest subspecialities of orthopaedic surgery. It contains the combination of many different principles such as external fixation, soft tissue reconstruction, intramedullary nailing and trauma surgery. The discovery of distraction osteogenesis was popularized the deformity surgery and augmented and spread it to the world. It has its own story like any other scientific discovery. This paper includes many devoted scientists, technology, philosophy and approaches from time to time. In this article, the evaluation, impaction and prediction of the deformity surgery will be discussed.