]> 2026-05-21T16:11:27-03:00 A numerical analysis of the biomechanics of the troracolumbar spine and the effects of vertebral body tethering instrumentation 0 pt-br escoliose engenharia mecanica coluna vertebral Francello, Eduardo Alberto Nicolini, Luis Fernando Roesler, Rodrigo de M. Universidade Federal de Santa Catarina. Programa de Pós-Graduação em Engenharia Mecânica Oliveira, Rafael Carreira 2024 2460310.5 139 p. Inglês Rafael Carreira Oliveira ; orientador, Eduardo Alberto Fancello ; coorientador, Luis Fernando Nicolini ; coorientador, Rodrigo de M, Roesler A numerical analysis of the biomechanics of the troracolumbar spine and the effects of vertebral body tethering instrumentation B000189 2024-10-29T20:20:05Z 2460613.3472801 A numerical analysis of the biomechanics of the troracolumbar spine and the effects of vertebral body tethering instrumentation 2024-10-29T20:20:57Z 2460613.3478819 Numerical analysis of the biomechanics of the troracolumbar spine and the effects of vertebral body tethering instrumentation 0 0 plainlist 1 [[:B000189#000]] Numerical analysis of the biomechanics of the troracolumbar spine and the effects of vertebral body tethering instrumentation# QUERY017e2c7b45bbf95f0e5e85fde5ce1052 0 0 plainlist 1 [[:B000189#245]] Numerical analysis of the biomechanics of the troracolumbar spine and the effects of vertebral body tethering instrumentation# 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QUERYbf450d876c86b4586e1bddd47aa0d92f 0 0 plainlist 4 <q>[[:B000189#100]] OR [[:B000189#110]] OR [[:B000189#111]] OR [[:B000189#130]]</q> Numerical analysis of the biomechanics of the troracolumbar spine and the effects of vertebral body tethering instrumentation# QUERYe1046e0db1cab2ba834ea8f70719603c 0 00301 001000800000003000900008005001700017008004100034040003800075090002700113100003000140245029900170260001000469300001800479500004400497502017000541504002500711520184700736520164702583650001404230650002504244650002104269700004404290700004304334700004204377710009804419856006904517 00000ntm a2200000 a 4500 04888 000 0 241029s2024    scba   g m    000 0 eng d 008 0 ##$a BR-FlWIK $b por $c BR-FlWIK $d BR-FlUSC 040 0 ##$a CETD $b UFSC $c PEMC $d 2358 090 0 1#$a Oliveira, Rafael Carreira 100 0 12$a A numerical analysis of the biomechanics of the troracolumbar spine and the effects of vertebral body tethering instrumentation $h [recurso eletrônico] / $c Rafael Carreira Oliveira ; orientador, Eduardo Alberto Fancello ; coorientador, Luis Fernando Nicolini ; coorientador, Rodrigo de M, Roesler 245 0 ##$c 2024. 260 0 ##$a 139 p. : $b il. 300 0 ##$a Disponível somente em versão on-line. 500 0 ##$a Dissertação (mestrado) – Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2024. 502 0 ##$a Inclui referências. 504 0 ##$a A amarração de corpo vertebral (Vertebral Body Tethering - VBT) é uma técnica cirúrgica emergente para o tratamento da escoliose idiopática adolescente que tem ganhado popularidade entre os cirurgiões nos últimos anos. Devido à sua relativa novidade, muitos aspectos relacionados à biomecânica da coluna instrumentada permanecem desconhecidos, e a taxa de eventos adversos, incluindo o rompimento da corda, é elevada. O compromisso entre a correção da curva escoliótica e a preservação da mobilidade da coluna do paciente é um fator crucial a ser considerado no planejamento cirúrgico. O presente trabalho tem como objetivo calibrar e validar um modelo de elementos finitos da coluna toracolombar (T10-S1) e realizar um estudo de caso para avaliar os efeitos de diferentes configurações de pré-tensão de um sistema de VBT na biomecânica da coluna. O modelo foi calibrado e validado com base em dados experimentais provenientes de testes in vitro. O sistema de VBT foi incorporado ao modelo, que foi submetido a flexão, extensão, flexão lateral e rotação axial com uma magnitude de 5 Nm. Os resultados indicam que a correção pós-cirúrgica e a amplitude de movimento da coluna instrumentada são, respectivamente, diretamente e inversamente proporcionais à tensão nas cordas. Além disso, a introdução da VBT na coluna gerou movimentos acoplados não naturais significativos que podem influenciar na reabilitação dos pacientes, sendo um aspecto que deve ser cuidadosamente considerado pelos fisioterapeutas no processo pós-cirúrgico. As forças desenvolvidas nas cordas durante o movimento analisado são significativamente inferiores às necessárias para ocasionar falha estática, permitindo inferir que outros mecanismos de rompimento das cordas devem estar presentes, requerendo estudos adicionais. 8#$a Abstract: Vertebral Body Tethering (VBT) is an emerging surgical technique for the treatment of adolescent idiopathic scoliosis that has gained popularity among surgeons in recent years. Due to its relative novelty, many aspects related to the biomechanics of the instrumented spine remain unknown, and the rate of adverse events, including tether breakage, is high. The balance between scoliosis curve correction and the preservation of the patient’s spinal mobility is a crucial factor to be considered in surgical planning. This study aims to calibrate and validate a finite element model of the thoracolumbar spine (T10-S1) and conduct a case study to evaluate the effects of different pre-tension configurations of a VBT system on spinal biomechanics. The model was calibrated and validated based on experimental data from in vitro tests. The VBT system was incorporated into the model, which was subjected to flexion, extension, lateral bending, and axial rotation with a magnitude of 5 Nm. The results indicate that postoperative correction and the range of motion of the instrumented spine are, respectively, directly and inversely proportional to the tension in the tethers. Furthermore, the introduction of VBT in the spine generated significant unnatural coupled motion that may influence patient rehabilitation, which should be carefully considered by physiotherapists in the postoperative process. The forces developed in the tethers during the analyzed movement are significantly lower than those required to cause static failure, suggesting that other mechanisms of tether breakage must be present, requiring further studies. 520 0 04$a Escoliose 04$a Engenharia mecânica 04$a Coluna vertebral 650 0 1#$a Francello, Eduardo Alberto, $e orientador 1#$a Nicolini, Luis Fernando, $e coorientador 1#$a Roesler, Rodrigo de M., $e coorientador 700 0 2#$a Universidade Federal de Santa Catarina. $b Programa de Pós-Graduação em Engenharia Mecânica 710 0 40$z Versão integral em pdf $u https://bu.ufsc.br/teses/PEMC2358-D.pdf 856 0 B000189 001 0 BR-FlWIK 003 0 20241029172057.0 005