History of spine osteotomy -- Clinical and radiographic evaluation -- How to determine the levels of osteotomy -- Indications for spinal osteotomy -- Anesthesia for spine osteotomy surgery -- History of Spinal Osteotomy for Thoraco-Lumbar Kyphosis in Ankylosing Spondylitis -- Smith-Peterson osteotomy and Ponte osteotomy -- Pedicle Subtraction Osteotomy (PSO) -- Posterior Vertebral Column Resection (VCR) for Complex Spinal Deformities -- Posterior vertebral column decancellation -- Hemivertebrae Excision: Technique for Congenital Spine Deformity -- The Management of Thoracolumbar Kyphotic Deformity in Ankylosing Spondylitis -- Rod Link Reducer Posterior System for Vertebral Column Resection: A Porcine Model -- Proximal and Distal Junctional Fixation Technique -- Optimizing Safety in Spinal Deformity Surgery -- Outcomes of treatment of severe spinal deformity using spinal Outcomes of Treatment of Severe Spinal Deformity Using Spinal Osteotomy -- Preoperative and Postoperative Care Including Use of Halo Gravity Traction -- Functional Evaluation of Spinal Osteotomy -- Neurological deficit after spinal osteotomy -- Revision Surgery following Osteotomy -- Important Research Principles in the field of Spinal Osteotomy.