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№4' 2015

ORTHOPEDICS

INVESTIGATION OF STRESS-STRAIN STATE IN FEMUR MODEL WITH THE APPLIANCE FOR DISTAL DEFECT REPLACEMENT

O. YE. VYRVA, I. V. SHEVCHENKO

Prof. M. I. Sytenko Institute of Spine and Joint Pathology, NAMS of Ukraine, Kharkiv, Ukraine

The distal femur is most likely to experience the risk of the greatest static and dynamic loads, therefore, the use of metal implants to replace the post−resection defects is optimal at surgical treatment of patients with tumor lesions of this area. These implants are subject to cyclic mechanical stress, resulting in breakage of the implant components observed, thus research on optimization of interrelation of the components of endoprosthesis are conducted constantly. Based on the results obtained by mathematical modeling of implant−femur system, the authors identified the optimal interrelation between the components of the endoprosthesis depending on the length of the femur resection.

Key words: femur distal portion, mathematical simulation, modular implants in bone tumors, implant fracture, stress−strain states.

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