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Large-scale (A) and present hinge (B) numerical models. (A) In the large-scale numerical model, a SJM valve model is inserted into a simplified aorta consisting of a straight tube with an axisymmetric expansion representing the sinus region. The model for the hinge simulations corresponds to the shaded area in the large-scale model. (B) The hinge model is shown and the hinge recess, characterized by its butterfly shape, is clearly visible
