Having scoliosis surgery and fusion to thoracolumbar spine to pelvis and l5/s1 decompression with multilevel osteotomies. what happens in surgery ?

Lumbar scoliosis: Simple. Incision made in back to visualize spine to be fused. Length of incision appropriate for fusion. The facet joints are removed and the bone prepared for fusion. At l5-s1, facet and disk removed, and spacer placed into disk along with bone graft. Multiple laminectomy and facet excisions (osteotomy) to make spine more flexible. Rods/screws placed to maintain correction. Bone graft placed.