Objectives: To evaluate the cervical alignment after the correction of idiopathic scoliosis using high screw density and direct vertebral derotation (DVD) and to correlate it with thoracic kyphosis, spinopelvic parameters, and quality of life. Methods: Retrospective cohort study. We assessed the medical records and radiographs of patients submitted to idiopathic scoliosis surgery using high density of pedicular screws (80%) and DVD with at least 6 months of follow-up. All the radiographic parameters were evaluated in the preoperative period and in the last postoperative visit. Results: A total of 43 patients were evaluated, of which 35 (81%) were female. The mean age was 15 years (11 to 30 years) with a mean follow-up of one year and four months. Regarding Lenke's classification, 14 were of group 1, five of group 2, 10 of group 3, eight of group 4, four of group 5 and two of group 6. Only four patients had sagittal modifier (+) and two sagittal modifier (-).There was no significant difference between pre and postoperative thoracic kyphosis. When we evaluated the groups with +, N and -thoracic modifiers, we observed hypokyphotic and normokyphotic patients (-and N) had an increase in kyphosis, whereas hyperkyphotic patients (+)had a decrease. There was no statistical difference in relation to the radiographic parameters of the cervical spine in the pre and postoperative periods. There was a significant improvement in most of the parameters of the quality of life questionnaires, but no correlation with the cervical radiographic parameters. Conclusion: Correction of idiopathic scoliosis using a high density of pedicular screws and a direct vertebral derotation technique failed to improve thoracic kyphosis or change the cervical sagittal alignment, despite promoting a significant improvement in the parameters of quality of life questionnaires.Keywords: Scoliosis; Treatment outcome; Quality of life; Orthopedic fixation devices. RESUMO Objetivos: Avaliar o alinhamento cervical após a correção da escoliose idiopática utilizando alta densidade de parafusos e derrotação vertebral direta (DVD) e correlacionar com a cifose torácica, parâmetros espinopélvicos e qualidade de vida. Métodos: Estudo retrospectivo de coorte. Foram avaliados prontuários e radiografias de pacientes submetidos à cirurgia de escoliose idiopática utilizando alta densidade de parafusos pediculares (80%) e DVD com pelo menos seis meses de seguimento. Todos os parâmetros radiográficos foram avaliados no pré-operatório RESUMEN Objetivos: Evaluar la alineación cervical después de la corrección de la escoliosis idiopática utilizando alta densidad de tornillos y desrotación vertebral directa (DVD) y correlacionar con la cifosis torácica, parámetros espinopélvicos y calidad de vida. Métodos: Estudio retrospectivo de cohorte. Se evaluaron los historiales médicos y radiografías de pacientes sometidos a la cirugía de escoliosis idiopática utilizando alta densidad de tornillos pediculares (80%) y DVD con al menos seis meses de seguimiento. Todos los pará...