Osteosynthesis metal plate system for bone fixation using bicortical screws: numerical modelling [article]

Andrea Olmos, Fertuzinhos A, I. Dias, Fábio Pereira, Marcelo De Moura, Andrea Zille, Nuno Dourado
2021 figshare.com  
This work describes the numerical modelling of an immobilization system currently used to repair long bone fractures. The referred system was employed to ensure the mechanical stabilization of an oblique bone fracture by means of a dynamic compression plate (DCP) and bicortical screws. The numerical characterization of the fixation system was performed to obtain stress and strain fields in cortical bone tissue. The validation of the numerical model was performed using experimental data
more » ... y obtained in other work. Since the experimental characterization indorsed the visualization of the screw pull-out phenomenon during the loading process, damage parameters (trapezoidal law) were measured experimentally in this region. These parameters were introduced in the finite element model (FEM) to simulate the initiation and propagation of damage in bone tissue. A mixed-mode (I+II) damage law was used to mimic the mechanical behaviour of the bone fracture and the screw-bone interface.
doi:10.6084/m9.figshare.14113535.v1 fatcat:bqvm4jdgxbh5jiygqq7v3mcvq4