Example of a 14-years-old patient (Risser 0, closed TRC) affected by a genetic disorder and with a progressing 65° lumbar curve. At the last, 3-year follow-up, the lumbar curve is controlled and, while there is a slight overcorrection at the thoracolumbar junction, this allows for a better coronal balance. As the patient is almost non-ambulant, a maintained coronal alignment is of particular significance as it facilitates sitting.