This is the first of three deliverables regarding cancellous bone simulation. Each deliverable will contain the progress done and will describe the next steps. The cancellous bone simulation is one of the use cases of MIKELANGELO and is part of the work package 2. This document describes the bones software and tries to give some insight how this software works and what it needs to run. It explains limitation that are given at this point in time and explain how the MIKELANGELO project can improve the current work-flow in HPC centers. Furthermore, an implementation plan is outlined as well as an evaluation plan to document the progress and compare the results.