Tytuł pozycji:
Numerical method in biomechanical analysis of intramedullary osteosynthesis in children
Purpose: The paper presents the biomechanical analysis of intramedullary osteosynthesis in 5-7 year old children. Design/methodology/approach: The numerical analysis was performed for two different materials (stainless steel – 316L and titanium alloy – Ti-6Al-4V) and for two different fractures of the femur (1/2 of the bone shaft, and 25 mm above). Furthermore, the stresses between the bone fragments were calculated while loading the femur with forces derived from the trunk mass. In the research the Metaizeau method was applied. This method ensures appropriate fixation without complications. Findings: The numerical analysis shows that stresses in both the steel and the titanium alloy nails didn’t exceed the yield point: for the stainless steel Rp0,2,min= 690 MPa and for the titanium alloy Rp0,2,min = 895 MPa. Research limitations/implications: The obtained results are the basis for the optimization of mechanical properties of the metallic biomaterial. Practical implications: On the basis of the obtained results it can be stated that both stainless steel and titanium alloy nails can be aplied in elastic osteosythesis in femur fractures in children. Originality/value: The obtain results can be used by physicians to ensure elastic osteosythesis that accelerate bone union.