Abstract
Clavicle fractures are among the most common injuries of the upper limb, particularly among individuals with active lifestyles. Traditional treatment methods include conservative therapy and surgical interventions, with plate osteosynthesis being the most effective approach for complex fractures. However, standard plates do not always conform to the intricate anatomical shape of the clavicle, increasing the risk of complications, such as implant deformation and fixation failure. Therefore, the development and optimization of anatomically adapted plates capable of minimizing complications and ensuring stable fixation remain relevant challenges. Objective: to perform mathematical modeling of a domestically developed plate for the osteosynthesis of clavicle fractures.Methods. This study employed the finite element method (FEM) for biomechanical analysis of the "plate–clavicle" system. Solid models of the plate and clavicle were created using Autodesk Inventor PRO and converted into finite element models in the APM FEM (COMPASS-3D) environment. Applied loads included bending, compressive, and torsional moments, simulating real mechanical forces. The analysis was conducted to evaluate stresses, displacements, and the safety factor of the construction under various conditions.Results. The modeling demonstrated that the optimized plate ensures a uniform distribution of stresses, reducing the risk of localized overloads at the screw attachment points and fracture site. Stress values within the structure remained below the yield strength of the titanium alloy, while displacements were within acceptable limits. The safety factor indicated high structural reliability, even under maximum loads. Additionally, the analysis revealed that the plate allows for minimal physiological movements, promoting faster patient rehabilitation.Conclusion. The optimized design of the clavicle osteosynthesis plate exhibits high mechanical stability and the ability to withstand significant loads without the risk of structural failure. The proposed plate can be recommended for clinical application due to its reliable fixation, reduced risk of complications, and potential to shorten patient rehabilitation periods.Keywords: osteosynthesis, clavicle, mathematical modeling, plate, titanium implants.