Análise estrutural utilizando mef de uma órtese tipo colete Rigo Cheneau para tratamento de escoliose
The spine is a complex structure consisting of a mono-axial articulated set, with some rotation between the vertebrae, it is a complex biomechanical structure, which contains multiple movement structures, such as bones, ligaments, intravertebral discs and cartilage in which it is possible to develop...
Na minha lista:
| Autor principal: | |
|---|---|
| Outros Autores: | |
| Formato: | bachelorThesis |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
|
| Assuntos: | |
| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/50121 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: | The spine is a complex structure consisting of a mono-axial articulated set, with some rotation between the vertebrae, it is a complex biomechanical structure, which contains multiple movement structures, such as bones, ligaments, intravertebral discs and cartilage in which it is possible to develop several pathologies, among them, Scoliosis. Scoliosis is called idiopathic when no inductive disorders such as paralysis, congenital malformation, or metabolic disease have been established. Finite element models have been commonly used for biomechanical analysis and, among the existing studies, analyzes of the behavior of the spine and its various structures under loads are common. Recent studies prove that the effects of correction of vests manufactured by CAD/CAM technology with others designed in a traditional way, manually, are lighter and have better corrective effects However, such studies focus more on analysis in the coronal plane, disregarding the sagittal and transverse planes, which should also be analyzed for greater proximity to the reality of the patient's scoliosis degree. Faced with this problem, this course conclusion work will perform a static structural analysis of a Rigo Cheneau type vest used FEM to measure what happens to the therapeutic piece during the corrective treatment of scoliosis in the patient. The structure of the vest was computationally analyzed from the possible loads generated during its accommodation to the patient, in addition, the upper and lower regions of the vest were fixed, simulating the fixation on the patient's body. Thus, as expected, the places with the greatest deformation are those that suffered negative extrusions during the molding process and, consequently, are also the ones with a high concentration of loads. Thus, the correlation between the occurrence of failure stems from the places where there is compression in the thoracic and axillary regions of the patient. the finite element study was able to bring to light the necessary care in such regions to avoid the occurrence of cracks and failures, something that can occur and that compromises the patient's treatment by requiring maintenance and lack of continuous use of the vest. It is interesting to note the accuracy of the study with reality, since the main maintenance takes place at the points of compression of the patient's spine. Therefore, the model is in line with the final vest and allows the insertion of improvements in its design, whether in the change of material or thickness in the regions most susceptible to deformation capable of generating cracks. Furthermore, the model can also be improved by linking a geometric topological optimization study, which can improve its design to reduce the possibility of cracking. |
|---|