Special method of strained osteosynthesis for proximal humerus fractures is suggested. Twenty patients, aged 52- 78 years, were operated on by that technique. Primary stiffness of fixator (Y-shape pin) and secondary stiffness created by insertion and blocking of that pin provide stable fixation of fragments without infliction of additional intraoperative trauma. Owing to that the operative method could be successfully used in all patients with proximal humerus fractures independently on patients age and general condition. Preservation of blood circulation in the fragments, light traumatization of osteosynthesis, possibility of early rehabilitation makes this method perspective for the treatment of fractures in osteoporosis. Efficacy of drug therapy for osteoporosis during postoperative period is shown.