1. Department of Trauma and Reconstructive Surgery; University of Leipzig; Liebigstraße 20 04103 Leipzig Germany
2. Leipzig University of Applied Sciences (HTWK); Karl-Liebknecht-Straße 132 04277 Leipzig Germany
3. Institute of Anatomy; University of Leipzig; Liebigstraße 13 04103 Leipzig Germany
4. Fraunhofer Institute for Machine Tools and Forming Technology IWU; Nöthnitzer Straße 44 01187 Dresden Germany