1. Department of Orthopaedics and Traumatology, Bezirkskrankenhaus St. Johann i.T., Tyrol, Austria
2. Department of Orthopaedics and Traumatology, Paracelsus Medical University, Tyrol, Austria
3. Medical University Innsbruck, Tyrol, Austria
4. Department of Diagnostic, Interventional, and Paediatric Radiology, Inselspital University Hospital, University of Bern, Bern, Switzerland