1 Department of Orthopaedic and Trauma Surgery, Klinik Für Orthopädie und Unfallchirurgie, Malteser Waldkrankenhaus St. Marien, Rathsberger Straße 57, 91054, Erlangen, Germany. thomas.tischer@waldkrankenhaus.de.
2 Department of Orthopaedic Surgery, University Medicine Rostock, Rostock, Germany. thomas.tischer@waldkrankenhaus.de.
3 Joint Preservation and Reconstructive Surgery and Sports Medicine Unit, Humanitas Castelli Clinic, Bergamo, Italy.
4 Center of Sports Medicine and Exercise, Hirslanden Clinique La Colline, Geneva, Switzerland.
5 Orthopaedic Surgery Service, University Hospital of Geneva, Geneva, Switzerland.
6 Unité de Chirurgie du Genou, sportive et dégénératif, 29, avenue des Sources, Lyon, France.
7 ESSKA Consensus Project Advisor, Versailles, France.
8 Centre of Orthopaedic and Traumatology, University of Brandenburg an der Havel, Versailles, Germany.