نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی پزشکی، واحد مشهد، دانشگاه آزاد اسلامی، مشهد، ایران.
2 گروه ارتوپدی، دانشگاه علوم پزشکی مشهد، مشهد، ایران.
کلیدواژهها
موضوعات
عنوان مقاله English
نویسندگان English
The aim of this study was finite element analysis and biomechanical comparison of open wedge technique of proximal tibial osteotomy. For this purpose, an attempt was made to simulate the effect of osteotomy surgery on correcting the alignment of the lower limb. In this research, the biomechanical behavior of four states, including the profile of the plaque as curved and flat, and the orientation of the proximal screws as convergent and divergent under static load on the model made in the finite element software, and also to get closer to reality, a model of four states As mentioned, orthopedic screws are simulated as threaded. The images recorded by the CT scan method of the bone model prepared by the design consultant were used in 379 sections.The CT scan images were transferred to Mimics software, the geometry of orthopedic implants and screws was drawn in Solidwork software after physical preparation, then the model was subjected to static biomechanical analysis in the Abaqus software environment, to achieve the real model. From the point of view of properties, cortical bone as orthotropic and spongy bone as planar isotropic and implants and orthopedic screws were also considered titanium alloy.In the comparison of the von Mises stress between the four states, the bent plate state with the direction of the proximal screws converging has the highest von Mises stress on the implant and orthopedic screws, while the von Mises stress on the bone is the lowest in this state. The probability of occurrence of the stress shield phenomenon is the highest in this case, in the modeling considering the thread of orthopedic screws, the stress increased significantly on the model, and this issue indicates the importance of considering the thread of orthopedic screws in finite element modeling.
کلیدواژهها English
