1. Department of Orthopaedic Surgery, Amphia Ziekenhuis, Breda;
2. Department of Orthopaedic Surgery, Reinier de Graaf Hospital, Delft;
3. FORCE Foundation, Department of Orthopaedic Surgery, Amphia Ziekenhuis, Breda;
4. Department of Orthopaedic Surgery, Academic Medical Center, Amsterdam, the Netherlands