Is it necessary to fuse to the pelvis when correcting scoliosis in cerebral palsy?

Figure 1 Sample cases of patients who were fused short of the pelvis or whose fusion included the pelvis. A, B: Preoperative anteroposterior (A) and lateral (B) radiographs demonstrating scoliosis with a lumbar curve Cobb angle of 58˚ and pelvic obliquity of 12˚; C, D: Fusion was stopped at L5, and postoperative anteroposterior (C) and lateral (D) radiographs show the lumbar curve Cobb angle at 8˚ and pelvic obliquity at 3˚; E, F: Preoperative anteroposterior (E) and lateral (F) radiographs demonstrating scoliosis with a lumbar curve Cobb angle of 52˚ and pelvic obliquity of 19˚; G, H: Fusion was carried out to the pelvis, and postoperative anteroposterior (G) and lateral (H) radiographs show a lumbar curve Cobb angle of 48˚ and pelvic obliquity of 12˚.