Background and Aim: Treating progressive early-onset idiopathic scoliosis is challenging. Surgical treatment is indicated in patients whose curves progress despite nonsurgical treatment. Dual growing rod (DGR) technique allows control of the curve while permitting continued spine growth and pulmonary development. Correction in coronal and sagittal planes with this technique has demonstrated both clinically and radiologically in previous studies. It is shown that apical vertebra rotation (AVR) increases with single-rod instrumentation technique. The effect of DGR technique on AVR has not been investigated, yet. The aim of our study was to assess the impact of DGR instrumentation technique on the apical AVR.