Computational study of the influence of callus porosity on ultrasound propagation in healing bones. - Vassiliki T. Potsika; Ioannis F. Spiridon; Vasilios C. Protopappas; Maria G. Vavva; Panagiotis D. Lymperopoulos; Christos V. Massalas; Demosthenes K. Polyzos; Dimitrios I. Fotiadis (EMBC, 2014)