Mechanical testing and modelling of a bone-implant construct

摘要: Finite Element modelling of bone fracture fixation systems allows computational investigation the deformation response to load. Once validated, these models can be easily adapted explore changes in design or configuration a fixator. The tissue within gap determines its healing and is often summarised as stiffness construct. FE capable reproducing this behaviour would provide valuable insight into potential different systems. Current model validation techniques lack depth 6D load measurements. Other aspects creation such definition interfaces between components have also not been explored. This project investigated mechanical testing bone– plate construct for determination stiffness. In measurement analysis generated forces, moments movements showed large out plane behaviours which had previously characterised. Stiffness calculated from interfragmentary movement was found an unsuitable summary parameter error propagation too large. Current were applied compression torsion mimicking experimental setup. Compressive well replicated, though torsional not. prevalent work replicated model. The experimentally through modification model. Incorporation interface full no effect but did act reduce bringing it closer that experiment. definitions on behaviours, still replicated. Neither current nor novel able replicate evident work. New loads boundary conditions need developed mimic effects entire system.