FIGURE 2.
Illustrative example of skipping instrumentation. A, Preoperative standing coronal radiograph of a 14-year-old female patient with AIS and a main thoracic (MT) curve of 50° from T5 to T12. The sagittal Cobb angle of thoracic kyphosis (T5 to T12) was 20°. B, Immediate postoperative standing coronal radiograph obtained after application of the skipped pedicle screw strategy for correction from T5 to T12 shows a 20° (MT) curve. The sagittal Cobb angle of thoracic kyphosis was 12°. After 18 months, a follow-up radiograph (C) shows a 20° MT curve and a 20° thoracic kyphosis.