saeide fatemifar; behrooz sepehri; alireza mousavian; pegah khazaee nejad
Abstract
Background: There are some relatively definite indications for fixing these problems which can be as the surgery with Osteotomy and the deformation and making the bone fixed in new location. There are so many techniques in this field with respect to the surgery and the kind of osteotomy, and with respect ...
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Background: There are some relatively definite indications for fixing these problems which can be as the surgery with Osteotomy and the deformation and making the bone fixed in new location. There are so many techniques in this field with respect to the surgery and the kind of osteotomy, and with respect to the kind and fixation tool.Genovalgum is usually a disorder in femur distal and this point can be repaired by osteotomy. From the past, the blade plate is an attractive option for the fixation which can be harder than newer methods like lockable blade-plates for the younger surgeons. In this research, our goal was to present a new design of blade plate for more easiness in tool installation and test the finite element for making sure of the effectiveness of the new tool. The goal of this research is to design a modular sample of blade plate and the biomechanical comparison of these two states in the finite element form. In this research, the biomechanical behavior of these two methods with pseudo-static loading on the made model in the finite element software. Methods: The CT-Scan images were transformed to Mimics software. Then, the model under biomechanical analysis was placed in abaqus19.0 software in pseudo-static form. The bone was considered as orthotropic and stainless-steel implant. Results: In the comparison of the tension of blade plate and bone, the tension on the blade-plate and bone has been reduced in modular blade plate which is possibly related to the energy waste in the connection of blade and plate. The strain of modular blade plate is significantly less than the older blade plates, but the strain of the bone without orthosis is much more similar to the previous blade plate with respect to the strain of the bone
pegah khazaee nezhad; behrooz sepehri; alireza mousavian
Abstract
The foot quickly becomes a problem in diabetics, so it's important to diagnose problems and treat them early. One of these problems is the Charcot foots. Charcot problem is a type of deformity in the joint, also called neuropathic arthropathy. Because of this problem, the foot is removed from its natural ...
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The foot quickly becomes a problem in diabetics, so it's important to diagnose problems and treat them early. One of these problems is the Charcot foots. Charcot problem is a type of deformity in the joint, also called neuropathic arthropathy. Because of this problem, the foot is removed from its natural axis. To compensate for this abnormality, the surgeon removes some of the bone and places the other bones of the foot next to each other so that the foot returns to its normal position. To stabilize the bones next to each other, stabilizers such as plates on the two common surfaces of the medial and plantar or intramedullary nails are required. This study examines the biomechanical behavior of these three methods. One of the purpose of this study was to model and simulate as close as possible to the actual anatomy of the position of the study site. For this purpose, the images recorded by CT- Scan method were used by a 40-year-old woman and were transferred to mimics software to complete the geometric model. Then, the model was subjected to biomechanical analysis in abaqus19.0 software. By comparing the types of structures studied, in the nail model, more stress on the implant and less stress on the bone were observed. The plantar plate method is closer to the foot without implants in terms of maximum stress and is more suitable in this regard.
