Introduction. The number of cases of severe pelvic fractures in the last years is constantly increasing; Main trauma cause is high kinetic energy that results in unstable pelvic ring injuries. According to the data of different authors, disability constitutes from 22% to 66.7% of traumatisations with unstable fractures of the pelvic ring representing a psycho-socio-economic problem. Aim of the study. Improving the effectiveness of surgical treatment methods in unstable pelvic ring lesions. Materials and methods. The study is in the research period. The group provided for the study will include 50 patients. The current presentation includes 21 patients. Results. The formed surgical team was able to perform internal pelvic osteosynthesis. The treatment algorithm of patients with pelvic lesions was implemented and developed in the clinic. The patients post-traumatic quality of life has improved compared to earlier treatment methods. Conclusions. Internal osteosynthesis is a recently introduced method used successfully in unstable pelvic traumas, that allows firm stabilization and early mobilization of the patient. The surgical treatment should be performed depending on the type of fracture, not on the surgeon's skills.