1Department of Orthopedics and Trauma Surgery, Faculty of Medicine, Medical Center, Albert-Ludwigs-University of Freiburg, Hugstetter Straße 55, 79016 Freiburg, Germany
2Clinic for Orthopedics and Trauma Surgery, Sana Kliniken Leipziger Land, Borna, Germany
3Clinic for Orthopaedic Surgery, Ortenau Klinikum, Offenburg, Gengenbach, Germany
4Vincentius Orthopaedic Clinic, Konstanz, Germany
5Clinic for Trauma Surgery, BG-Klinik Tübingen, Tübingen, Germany
6Clinic for Trauma, Hand and Orthopaedic Surgery, Städtisches Klinikum Karlsruhe gGmbH, Karlsruhe, Germany
7Clinic for Orthopedics and Trauma Surgery, Klinikum Heidenheim, Heidenheim, Germany
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