Severe deformities of spine are problematic because of the difficulty of surgical treatment. These deformities can cause functional disability as a result of impairment of postur and normal gait. Also, they can be related with psychological problems.

Corrective osteotomies, used in the spine surgery are technically demanding. But the success rate of them in severe deformities increases gradually.

Smith-Petersen osteotomy, pedicle subtraction osteotomy and vertebral column resection are commonly used corrective osteotomies in spine surgery with different modifications developed after first descriptions. Each osteotomy technique has different surgical properties. The Smith-Petersen osteotomy can achieve approximately 100 of correction at each level it is performed. The correction degree of PSO is 300 – 400. Vertebral column resection is indicated when the deformity is severe enough that can not be corrected with other other osteotomy types.

Blood loss, neurologic problems, and the other complications are increased as the resection amount and technical complexity of osteotomy increaeas. The most frequent complication of these procedures is neurologic deficits.

Keywords: Spine deformities, Smith- Petersen osteotomy, Pedicle subtraction osteotomy, vertebral column resection