Eventos Anais de eventos
ENEBI 2018
6º Encontro Nacional de Engenharia Biomecânica
Finite Element Analysis Of Pedicle Screw Pullout Strength In Traditional And Cortical Bone Trajectories
Submission Author:
Filipe Bisinella da Silva , RS , Brazil
Co-Authors:
Filipe Bisinella da Silva, Carlos Alberto Costa, Paulo Roberto Linzmaier, Asdrubal Falavigna
Presenter: Filipe Bisinella da Silva
doi://10.26678/ABCM.ENEBI2018.EEB18-0143
Abstract
Pedicle screws are used in the treatment of various spine disorders. The insertion can be made through the traditional trajectory and, recently, through the cortical bone trajectory. Since the screw insertion is a traumatic procedure, it is important to fully understand the interaction between the screws and the vertebra before the surgery. This study compares the fixation strength between both by performing a finite element analysis of the pullout load in both trajectories. The vertebra model is imported from a CT scan. The cortical bone trajectory demonstrated a greater pullout resistance when compared to the traditional trajectory.
Keywords
Spine, Pedicle screw, Finite Element Analysis
