Fig. 2From: Accuracy of thoracic pedicle screw placement in adolescent idiopathic scoliosis patients using the entry point identified by new landmarks: a computed tomography studyExtrapedicular technique of screw placement in thoracic vertebra with thin pedicle. The width of thoracic pedicle is very small on the concave side (a arrow); the concave TP screw passed through the pedicle-rib junction with the screw tip fully contained in the vertebral body (b)Back to article page