Posterior Correction is the approach used for many of the cases of idiopathic scoliosis (double major scoliosis, double thoracic scoliosis and neuro-muscular scoliosis). This involves a long incision along the back. Specially designed screws, hooks or bands are placed in the spinal column carefully working around and on either side of the spinal cord. Rods (or Rail rods) are contoured to the desired shape of the spine. The implants are made of Titanium or Cobalt Chromium with some other trace metals.
The correction is then undertaken with Spinal Cord monitoring. There is a small risk of paralysis and needs to be discussed. Spinal cord monitoring ensures neurological safety of the correction.
The operated segments are fused and should not move in the future. Bone grafts are used to achieve fusion. These are partly the patients bone and partly donated bone. The screws and rods are not routinely removed. Sometimes an area does not fuse leading to a pseudarthrosis. This may need more surgery. This may be associated with infection or a rod breakage.
The other complications of this surgical approach are infection, deep vein thrombosis, pulmonary embolism.