Adult deformity, which occurs with degeneration of the spine, is a pathology that has been seen usually in the older population. The patients with adult deformity have a pain and disability that develops within time. Adult deformity is different from adolescence idiopathic scoliosis because of its features. Primary degenerative scoliosis is the most common situation in adult deformities. Posterior dynamic stabilization systems can be used at the beginning period of progressive adult deformity. The treatment of adult deformity and scoliosis in advanced cases includes fusion along with osteotomies and instrumentations. Adult deformity has also high rates of both morbidity and complication.