1. Medical Faculty Mannheim, Heidelberg University, Section for Experimental Orthopaedics and Trauma Surgery, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
2. Department Chemical Process Engineering, University of Applied Sciences Mannheim, Paul-Wittsack-Straße 10, 68163 Mannheim, Germany
3. Department of Mechanical Engineering, Competence Center of Tribology, University of Applied Sciences Mannheim, Paul-Wittsack-Straße 10, 68163 Mannheim, Germany
4. Department of Medical Statistics, Medical Faculty Mannheim, Heidelberg University, Ludolf-Krehl-Straße 13-17, 68167 Mannheim, Germany