Fig. 1From: Accuracy of thoracic pedicle screw placement in adolescent idiopathic scoliosis patients using the entry point identified by new landmarks: a computed tomography studyIllustration of selecting entry point for TP screws. Red curve (arrow): the curved border connecting lateral border of the superior facet and the transverse process. Point a: the intersection of the curved border and inferior facet; line l: the base of superior facet; point b (entry point): the junction of line l and the line through point a, paralleling to the supraspinous ligamentsBack to article page