EXPERIMENTAL STUDY OF OSTEOSYNTHESIS STABILITY OF THE DISTAL PART OF THE HUMERUS

Unresolved issue is improving of the osteosynthesis extraarticular fractures distal humerus. Search for a simplified method biological fixation, which assumes, with low trauma, to ensure stable fixation fragments and movements in elbow joint early postoperative period. Objective.To carry out comparative analysis bone displacement humerus extra-articular fractures, stabilized by extraosseous transosseous osteosynthesis. Methods. Biomechanical study model was made. Transosseous modeled using author’s external apparatus (EFA). For comparison, we chose an Y-shaped plate. The humeral models were loaded interval stepwise increased load compression along axis, flexion parallel plane, as well perpendicular fixing elements plate EFA. magnitude gradually from 0 250 N step 50 N. forces at which, due action various loads, level fracture appeared. Results. experimental studies showed that rod provide same stability under conditions axial (p > 0.05). Under influence bending loads more than 100 plane elements, had slight advantage (10 %). A significantly better result < 0.01) obtained when device used elements. Conclusions. In case humerus, proposed ensures all loading options. It quite reliable can be recommended use clinical practice.