Compara？？o do poder de corre？？o do instrumental de Luque-Galveston e do parafuso pedicular no tratamento cirúrgico da escoliose neuromuscular

objetive: to compare the correction of the major curve and pelvic obliquity using luque-galveston instrumentation and pedicle screw constructs in the treatment of neuromuscular scoliosis. methods: seventy-four patients treated by fusion posterior to the sacrum were investigated using preoperative, traction and postoperative radiographs. twenty-four cases were submitted to luque-galveston instrumentation (group 1) and fifty were submitted to pedicle screw fixation (group 2). radiographic parameters were: major curve angle in the preoperative (cobb preop), traction (cobb traction), and postoperative films (cobb postop), flexibility, final correction, and the cincinnati index, which correlates final correction and flexibility (cincinnati = correctioln / flexibility). the same parameters were analyzed for pelvic obliquity (po): po preop, po traction, po postop, flexibility po, correction po, and cincinnati index for po. results: mean age in the group 1 was 12.24 years and 16.13 years in the group 2 (p=0.001). the commonest disease in group 1 was spinal muscular atrophy (38%) and in group 2, cerebral palsy (62%). the mean major curve angle was 76.67o in group 1 and 85.54o in group 2. flexibility was 45.32% in group 1 and 39.47% in group 2. postoperative correction was 63.07% in group 1 and 59.8% in group 2. cincinnati index was 1.44 in the group 1 and 1.77 in the group 2. mean po preop was 20.71o in group 1 and 26.60o in group 2. po flexibility was 73.61% in group 1 and 56.54% in group 2 (p=0.047). po correction was 73.47% in group 1 and 72.11% in group 2. cincinnati index for po was 1.09 in group 1 and 1.49 in group 2 (p=0.045). conclusions: postoperative major curve correction was similar with pedicle screws and luque-galveston instrumentation, but pelvic obliquity correction was greater when pedicle screw was used in the surgical treatment of neuromuscular scoliosis.