Biomechanics, heel bone (calcaneus), heel nail, FEM, CT images, stress analyses.

This article deals with the strength analysis of an intramedullary nail (internal fixator), used intraumatology/orthopaedic for a broken heel bone (calcaneus). The application focuses on the unique miniinvasiveC-NAIL produced by the company Medin a.s. (Nové město na Moravě, Czech Republic). The focus ison types of calcaneal fractures and the possibilities of treating them, on the analysis of calcaneus load andthe creation of a CAD-FEM model of the calcaneus from CT images (design – the engineeering point ofview). Consequently, an analysis is carried out of the peripheral conditions including loading. Thecalculations were done on solid („healthy“) bones and bones cut into indidivual bone fragments (imitatingbroken bones), using the finite element method in the Ansys Workbench application.