Preoperative planning systems (PPS) currently are very important for evidence-based medicine promotion in surgery worldwide. Design and development of such systems is the mainstream of health care provision in Russia and let to apply preventive, diagnostic and remedial technologies based on the evidenced effectiveness and safety. PPS allow to reduce planning time, increase its accuracy and to minimize medical malpractice. Modern PPS perform a geometric planning helping surgeon to make the correct decision regarding surgery management. Special PPS designed for vertebral-pelvic complex surgery allow evaluate bone and joint deformation degree, planning simultaneous implants replacement, osteotomy. The evaluation is based on 2D and 3D medical images (if available) studying. The analysis of the most demanded modern PPS (MediCad, TraumaCad, OrthoView and Surgimap) properties shows that all of these products allow to measure a massive number of orthopedic parameters: scoliosis, lordosis, sagittal balance, the angular deviation of the sacrum, the cervico-diaphyseal angle, the Hilgenreiner angle etc. However not all of indicated systems allow to automatically search such parameters as the Reimer index (percentage) and epiphyseal index. Also not all the systems have the detection of calibration devices function and Auto-Hip function. So the aim of this study is to identify and prove the sufficient number of parameters to be evaluated by the surgeon to perform correct geometric preoperative planning in vertebral and pelvic complex surgery.