Comparison of the effect of locking vs standard screws on the mechanical properties of bone-plate constructs in a comminuted diaphyseal fracture model

The purpose of this study was to compare the mechanical properties of bone-plate constructs with locking compression plates (LCP) used either with standard screws or with locking screws on an experimental model of comminuted fracture

Sublingual sialocele in a cat

Case summary A 1-year-old male neutered cat was presented with a right-sided swelling of the floor of the oral cavity, causing dysphagia and hypersialorrhoea for 2 months. Fine-needle aspiration of the mass and CT were suggestive of a right sublingual sialocoele with no obvious cause. Surgical resection of the ipsilateral sublingual–mandibular salivary gland complex, as well as marsupialisation of the mucocoele, was performed. The cat recovered uneventfully. Histopathological examination of the resected specimen confirmed the diagnosis. No sign of recurrence was reported 7 months after surgery. Relevance and novel information Overall, sialocoeles are rare in cats but sublingual mucocoele is the most common form. Diagnosis is usually straightforward and the use of CT to help localise the affected site and possibly identify a cause has been infrequently described. Surgical treatment recommendations have been updated, which also makes a refresher of this uncommon condition likely to be of interest to the feline practitioner

Hybrid 3D Mass-Spring System to simulate isotropic materials

Work In Progress Session, VRIPHYS 2017: 13th Workshop on Virtual Reality Interaction and Physical Simulation, 23-24 April 2017, Lyon, France.Cubic symmetric Mass-Spring Systems (MSS) for simulating isotropic elastic materials are known to be intrinsically limited by the Cauchy constraints (rari-constant theory) involving Poisson ratio of exactly ν = 1/4. To mitigate the impact of this restriction, we propose a new solution based on correction forces, which authorizes to use MSS for materials with ν ∈]0; 0.5[. The validation of our model is evaluated by comparing its response to various deformations with Finite Element Model (FEM). The results show that the proposed model is relevant to simulate any compressible isotropic elastic material, and in particular nearly incompressible (Poisson ratio ≃ 0.5) biological soft tissues for which it is dedicated

Hybrid 3D Mass-Spring System to simulate isotropic materials

Work In Progress Session, VRIPHYS 2017: 13th Workshop on Virtual Reality Interaction and Physical Simulation, 23-24 April 2017, Lyon, France.Cubic symmetric Mass-Spring Systems (MSS) for simulating isotropic elastic materials are known to be intrinsically limited by the Cauchy constraints (rari-constant theory) involving Poisson ratio of exactly ν = 1/4. To mitigate the impact of this restriction, we propose a new solution based on correction forces, which authorizes to use MSS for materials with ν ∈]0; 0.5[. The validation of our model is evaluated by comparing its response to various deformations with Finite Element Model (FEM). The results show that the proposed model is relevant to simulate any compressible isotropic elastic material, and in particular nearly incompressible (Poisson ratio ≃ 0.5) biological soft tissues for which it is dedicated

Hybrid 3D mass-spring system for simulation of isotropic materials with any Poisson’s ratio

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