Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
DEVELOPMENT OF A FINITE ELEMENT MODEL OF THE THORACOLUMBAR SPINE FOR THE INVESTIGATION OF VERTEBRAL BODY TETHERING INSTRUMENTATION
Submission Author:
Rafael Carreira Oliveira , SP
Co-Authors:
Rafael Carreira Oliveira, Luis Fernando Nicolini, Eduardo Fancello, Carlos Rodrigo de Mello Roesler, Marx Ribeiro
Presenter: Rafael Carreira Oliveira
doi://10.26678/ABCM.COBEM2023.COB2023-1265
Abstract
Anterior Vertebral Body Tethering (VBT) is an innovative fusionless growth modulating surgical technique used to treat adolescent idiopathic scoliosis (AIS), aiming to mitigate restricted motion and interference with patient growth associated with the conventional surgical treatment of scoliosis, namely posterior spinal fusion (PSF) or arthrodesis. As VBT is a relatively new approach, further research is needed to comprehensively understand its effects on the biomechanics of the scoliotic spine and to optimize its application to achieve desired outcomes while minimizing the need for revision surgery. Due to the difficulty in obtaining spine samples for experimental analyses, numerical simulation represents a viable alternative to evaluate the biomechanics of the native and instrumented spine. This study aims to calibrate and validate a robust computational model of the thoracolumbar spine (T10-S1) using experimental data from cadaveric spines. The model is developed to assess the effects of different VBT configurations (single or double cord, hybrid instrumentation, and varying tether pre-tension) on the biomechanics of the thoracolumbar spine during flexion, extension, lateral bending, and axial rotation.
Keywords
Vertebral Body Tethering, Spine, Finite Element Method, Biomechanics.
