1. DOUW, Section of Trauma- and Reconstructive Surgery, University Hospital Halle (Saale), Halle, Germany
2. BG Trauma Center Bergmannstrost Halle, Department of Trauma- and Reconstructive Surgery, Halle, Germany
3. Department of Orthopaedic Surgery, Hannover Medical School, Diakovere Annastift, Hannover, Germany
4. University Hospital for Orthopedic Surgery, Pius Hospital Oldenburg, Oldenburg, Germany
5. Hospital München Harlaching, Department of Foot and Ankle Surgery, München, Germany
6. Department of Orthopaedics and Trauma Surgery, Muskuloskelettal University Center Munich (MUM), Hospital of the University Munich, LMU Munich, Germany
7. Department of Orthopaedic Surgery, Trauma Surgery, and Sports Medicine, Cologne Merheim Medical Center, Cologne, Germany
8. Joint Center Rhein-Main, Hochheim am Main, Germany
9. Department of Trauma, Hand and Reconstructive Surgery, University Hospital Jena, Jena, Germany
10. BG Trauma Center Tübingen, Eberhard-Karls-University Tübingen, Tübingen, Germany
11. DIAKOVERE Annastift, Hannover, Germany
12. Schön Hospital München Harlaching—FIFA Medical Centre of Excellence, Munich, Germany
13. Ludwig Maximilian University Munich, Department of Orthopaedics and Trauma Surgery, Muskuloskelletal University Center Munich (MUM), Munich, Germany
14. Justus Maximilian University Wuerzburg, König-Ludwig-Haus, Würzburg, Germany
15. Paracelsus Medical Private Universität, Salzburg, Austria