The surgeon then rigorously identifies the affected nerves using refined technology that acknowledges which nerves are producing abnormal responses. They can also use a small piece of bone, known as a bone graft, to help the vertebrae fuse collectively. The bone graft is usually taken from the child’s decrease spine. Surgeons may also recommend osteotomy to reposition bones in other elements of the physique, including the lower leg. Osteotomy is a process to reshape bones and correct their alignment, enhancing joint mobility and lowering ache. For example, the hip joint is a ball-and-socket joint, which means the top of the thighbone, known as the femur, is supposed to suit snugly into the socket-shaped pelvic bone.