1. Center for Musculoskeletal Surgery, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
2. Berlin Institute of Health at Charité, Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
3. Department of Trauma Surgery, University Hospital Rechts der Isar, Technical University of Munich, Munich, Germany
4. Hannover Medical School, Department of Orthopedic Surgery, Hannover, Germany