Testing Mechanical Behaviour of Bone-Plate Construct

Metal plates are widely used to treat bone fractures operationally. Rigid metal plates support the fracture site and allow early weight-bearing and mobility for patients. This paper aims to compare the experimental work with the analysis of finite elements for bone plates used to heal femoral fractures according to their effects on the bone and fracture site and to compare their behaviors under the compression condition that is created while the patient (70 kg weight) is standing up. Firstly, this study is intended to assist surgeons in determining where to position the screws to achieve optimal fracture fixation; secondly to state the amount of deformation created after fixation of the bone fracture under the body mass. This paper has been focused on the analysis of bone-plate construct as a transverse fracture of femur bone fixed with Dynamic Compression Plate (DCP) of 16 holes and Cortex screws 4.5. To study the effects of the positioning of the screws on the mechanical behavior for different screws arrangements. This work contains experiential work and finite element analysis (FEA) Simulation. Concerning the experimental work compression test is conducted by a Testometric device to validate the FEA results. The results state the relationships between the total deformation and the plate working length according to three different screws distribution patterns SDPs. The study shows the regions of maximum deformation and stress, also shows the difference in results of cylindrical and anatomical bone models used in the majority of researches.