Michela F. Capasso L, Olivi A, et al. - The present study was conducted to present a lower screw malposition rate applying percutaneous fixation of pelvic ring fractures and sacroiliac dislocations guided by navigation system based on 3D-fluoroscopic images in comparison with traditional imaging techniques and to assess the functional outcomes of this innovative procedure. Between February 2018 and December 2018, 10 cases of disrupted pelvic ring lesions treated in the hospital were enrolled for closed reduction and percutaneous screw fixation of applying with O-Arm and the acquisition by the Navigator. They conducted a preoperative assessment on the patients by means of x-Ray imaging and CT scan. The excellent outcomes collected regarding the patients' quality of life and the absence of complications allow us to look positively at the future of this technique, which requires further studies and improvement.