FIELD: medicine.;SUBSTANCE: invention refers to medicine, namely to traumatology and orthopaedics, area of traumas treatment for locomotor apparatus by means of programmed and simulated methods of extrafocal osteosynthesis. Disclosed is a method for three-dimensional modelling of operation of transosseous osteosynthesis in fractures of an ankle joint, based on using a computer equipped with image input and visualization means, and comprising an X-ray image input image of the fracture point, calibration of the optical density of the X-ray image, geometric scaling, correction of brightness and contrast of an image, marking with contrasting labels of proximal and distal segments of fragments and large splinters of bones, performing the functions of virtual distraction, compression, medial and lateral displacement, rotary and angular movement of fragments, complete virtual reduction of fragments, characterized by using a computer program of 3D graphics of a virtual three-dimensional model of bone structures of the fracture region based on scans made from the original X-ray patterns of the injured segment of the body, wherein the aligned bone structures are scaled to accurate comparison of virtual dimensions, shapes, ratios and anthropometric data of the patient, wherein initially each fragment and a large splinter of the virtual bone obtains its own coordinate system with a center at a point, construct an action algorithm in which, respectively, to the steps of eliminating the offset, each fragment and splinter are moved to complete virtual reposition, wherein center of each three-dimensional fragment has its geometric spatial address and all its movements are monitored on monitor in form of digital data and stored in computer memory, and each movement in the form of a virtual reduction step is recorded separately and based on the obtained information, the real operation plan is formed.;EFFECT: invention provides improved functional and anatomical results of surgical treatment, higher quality and efficiency of operations, reduced length of consolidation and rehabilitation of patients.;1 cl, 7 dwg
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