Figure 2From: Thoracic pedicle classification determined by inner cortical width of pedicles on computed tomography images: its clinical significance for posterior vertebral column resection to treat rigid and severe spinal deformities—a retrospective review of cases Preoperative and postoperative computed tomography images of pedicle classification determined by the inner cortical width. (a) Preoperative type I pedicle. (b) Postoperative type I pedicle. (c) Preoperative type IIa pedicle. (d) Postoperative type IIa pedicle. (e) Preoperative type IIb pedicle. (f) Postoperative type IIb pedicle.Back to article page