BACKGROUND The prescription of the oral anticoagulant rivaroxaban to prevent thromboembolic episodes associated with orthopaedic surgery has dramatically increased since it was introduced. Rivaroxaban is beeing prescribed although recent in-vitro studies revealed that it impaired osteoblast metabolism. In this study we analysed the effect of rivaroxaban on fracture healing in a rat femur fractu...

The J-based fracture testing technique is newly extended to experimentally determine the tension-softening (a-6) relations in ceramic-matrix composites. The J-based technique originally proposed for concrete has been well established for quasi-brittle materials where the fracture process is primarily dominated by the formation of a fracture process zone and the contribution of the crack tip tou...

We present a model for a Saaman-Taylor nger advancing into a vis-coelastic medium, along with solutions for the dynamics of the tip of the nger coupled to a \fractured zone". The fractured zone is deened as a region of the medium which the nger can penetrate, and ahead of which stress builds up, eventually leading to fracture of the medium. The model predicts a self-sustained oscillation in the...

It is challenging to properly reduce pelvic ring injuries that involve a zone 3 sacral fracture. Several open and closed reduction methods have been described. Percutaneous reductions are challenging, and improper reductions can have poor long-term outcomes. The pelvic C-clamp is a tool designed to provide emergency stabilization to patients suffering from c-type pelvic ring injuries. We descri...

Soft materials including elastomers and gels are pervasive in biological systems and technological applications.Whereas it is known that intrinsic fracture energies of softmaterials are relatively low, how the intrinsic fracture energy cooperates with mechanical dissipation in process zone to give high fracture toughness of softmaterials is notwell understood. In addition, it is still challengi...

Are the cohesive laws of interfaces sufficient for modelling fracture in polycrystals using the cohesive zone model? We examine this question by comparing a fully atomistic simulation of a silicon polycrystal to a finite element simulation with a similar overall geometry. The cohesive laws used in the finite element simulation are measured atomistically. We describe in detail how to convert the...

The morphology of injection moulded samples of polyamide-polybutadiene blends (85.15) with an average particle size of 0.3 pm was studied. The samples were fractured in a notched tensile test at crosshead speeds of 10m4 and 1 rns-’ and the structure of the deformation zone was studied using various techniques: polarized light microscopy, scanning electron microscopy, transmission electron micro...