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- W4385271657 abstract "Surgical education of fracture fixation biomechanics relies mainly on simplified illustrations to distill the essence of the underlying principles. These mostly consist of textbook drawings or hands-on exercises during courses, both with unique advantages such as broad availability and haptics, respectively. Computer simulations are suited to bridge these two approaches; however, the validity of such simulations must be guaranteed to teach the correct aspects. Therefore, the aim of this study was to validate finite element (FE) simulations of bone-plate constructs to be used in surgical education in terms of fracture gap movement and implant surface strain. The validation procedure was conducted in a systematic and hierarchical manner with increasing complexity. First, the material properties of the isolated implant components were determined via four-point bending of the plate and three-point bending of the screw. Second, stiffness of the screw-plate interface was evaluated by means of cantilever bending to determine the properties of the locking mechanism. Third, implant surface strain and fracture gap motion were measured by testing various configurations of entire fixation constructs on artificial bone (Canevasit) in axial compression. The determined properties of the materials and interfaces assessed in these experiments were then implemented into FE models of entire fixation constructs with different fracture width and screw configurations. The FE-predicted implant surface strains and fracture gap motions were compared with the experimental results. The simulated results of the different construct configurations correlated strongly with the experimentally measured fracture gap motions (R 2 >0.99) and plate surface strains (R 2 >0.95). In a systematic approach, FE model validation was achieved successfully in terms of fracture gap motion and implant deformation, confirming trustworthiness for surgical education. These validated models are used in a novel online education tool OSapp ( https://osapp.ch/ ) to illustrate and explain the biomechanical principles of fracture fixations in an interactive manner." @default.
- W4385271657 created "2023-07-27" @default.
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- W4385271657 date "2023-04-11" @default.
- W4385271657 modified "2023-10-04" @default.
- W4385271657 title "EXPERIMENTALLY VALIDATED COMPUTER SIMULATIONS OF LOCKING PLATE FIXATIONS FOR SURGICAL EDUCATION" @default.
- W4385271657 doi "https://doi.org/10.1302/1358-992x.2023.8.001" @default.
- W4385271657 hasPublicationYear "2023" @default.
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