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n as well as for the validation of field triage criteria for the most severely injured patients worldwide.PURPOSE Safe pedicle screw placement is a daily challenge to every spine surgeon. Introduction of minimally invasive approaches in spinal surgery led to an impaired facility of inspection of the surgical field increasing the importance of intraoperative imaging and navigation. During the past years, we established a minimally invasive, navigated approach in our clinical setting. METHODS We retrospectively reviewed the accur