1. Department of Orthopaedics and Trauma Surgery University Hospital Bonn Bonn Germany
2. Institute of Biomechanics and Orthopaedics German Sport University Cologne Cologne Germany
3. Institute of Advanced Biomechanics and Motion Studies Offenburg University of Applied Sciences Offenburg Germany
4. Department of Physical Performance Norwegian School of Sport Sciences Oslo Norway
5. Department of Sports Orthopaedics Technical University of Munich Munich Germany
6. Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine University Medicine Greifswald Greifswald Germany
7. Department of Orthopaedic Surgery Centre Hospitalier Luxembourg—Clinique d'Eich Luxembourg City Luxembourg
8. Department of Orthopaedic and Trauma Surgery Malteser Waldkrankenhaus St. Marien Erlangen Germany
9. Gelenkzentrum Mittelrhein Koblenz Germany