Correlação entre o número de parafusos e o percentual de correção no tratamento cirúrgico da escoliose neuromuscular Correlation between number of screw and curve correction in the treatment of neuromuscular scoliosis Correlación entre el número de tornillos y el porcentual de corrección en el tratamiento quirúrgico de la escoliosis neuromuscular

Objective: to investigate if the number of pedicular screw (screw density) within the major curve correlates with the curve correction in the surgical treatment of neuromuscular scoliosis. Methods: a total of 55 patients with neuromuscular scoliosis that were exclusively submitted to posterior spinal fusion with pedicular screw constructs were retrospectively investigated. Data included major curve measurements assessed on pre and immediate postoperative radiographs, and the percentage of curve correction. The screw density (number of screw within the major curve relative to the number of available implant sites) was calculated; its relationship with the percentage of the curve correction was evaluated by the Spearman’s rank correlation coefficient. Results: twenty-eight (51%) females and RESUMEN