With this technique, screws are inserted only into the thoracic vertebrae, and the force applied to straighten the thoracic vertebrae is transmitted downward from the thoracic vertebrae to the lumbar vertebrae, which consequently straighten. With this method, the lumbar vertebrae are not fixed in place as the thoracic vertebrae are, so that there is no obstruction to bending or turning at the waist.
所謂「灌頂法」，是在手術矯正 S 型側彎時，只把鋼釘植入胸椎，予以矯正固定，再利用矯正胸段側彎時將腰段側彎所需的矯正力，由胸段側彎的「尾端」灌入腰段側彎的「頂端」，腰段側彎即可自行矯正。