SurgiScol PST (patient-specific template) is a pedicle screw pair fixation guide used for Scoliosis correction that consists of a set of 12 parts (T1 to T12). The 12 parts are provided for the thoracic with a unique shape characterized by two transversal ribs to secure the relay of the PST guide over the spinous process, transvers process and the articular surface. The surgeon is given a choice to select the number of PST’s needed in surgery depending on a preoperative planning.