1. Department of Orthopaedic Surgery, REGIOMED Klinikum Lichtenfels, Lichtenfels, Germany
2. Department of Orthopaedic Surgery, Rostock University Medical Center, Rostock, Germany
3. Department of Radiology, REGIOMED Klinikum Lichtenfels, Lichtenfels, Germany
4. Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri, USA
5. Department of Orthopaedic Surgery, Malteser Waldkrankenhaus St Marien, Erlangen, Germany
6. Committee Osteotomy, German Knee Society (DKG), Germany