Scoliosis is a progressive disease that leads to an abnormal curvature of the backbone. Surgery correction is done in curvatures of over 45 degrees and typically involves the use of modern instrumentation systems in which hooks and screws are applied to the spine to anchor long rods, ensuring the correction of the curvature and its stability over time. These instruments are surgically attached in a way that redistributes the stresses on the bones and keeps them in proper alignment while the bones of the spine fuse.