1. Department of Orthopedic Surgery, Martin Luther University Halle–Wittenberg, Halle (Saale), Germany
2. Department of Trauma Surgery, Employers' Liability Insurance Association Hospital Bergmannstrost, Halle (Saale), Germany
3. Department of Trauma Surgery, Friedrich Schiller University Jena, Jena, Germany
4. Federal Institute for Materials Research and Testing, Berlin, Germany
5. IZM, Nanotechnikum Weinberg, Martin Luther University Halle–Wittenberg, Halle (Saale), Germany
6. Department of Orthopedic and Trauma Surgery, Albert Ludwig University Freiburg, Freiburg, Germany