1. Department for Trauma and Orthopaedic Surgery, Berufsgenossenschaftliche Unfallklinik Frankfurt am Main, 60389 Frankfurt, Germany
2. Department for Trauma and Orthopaedic Surgery, Evangelical Hospital Bethel Bielefeld, 33611 Bielefeld, Germany
3. Division of Biostatistics and Mathematical Modelling, Goethe-University, Frankfurt am Main, Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany
4. Department for Septic Bone Surgery, Berufsgenossenschaftliche Unfallklinik Frankfurt am Main, 60389 Frankfurt, Germany
5. Department of Foot and Ankle Surgery, Berufsgenossenschaftliche Unfallklinik Frankfurt am Main, 60389 Frankfurt, Germany