1. Department of Clinical Institute, Aarhus University, Aarhus, Denmark;
2. Department of Orthopedics, Aarhus University Hospital, Aarhus, Denmark;
3. Department of Orthopaedics, Herlev-Gentofte Hospital, Copenhagen University Hospital, Hellerup, Denmark;
4. Department of Radiology, Aarhus University Hospital, Aarhus, Denmark;
5. Department of Orthopedics, Vejle Hospital, Vejle, Denmark;
6. Department of Orthopedic Surgery, Biomechanics and Imaging Group, Leiden University Medical Center, Leiden, Netherlands