1. Department of Orthopaedics and Traumatology, Upper Limb Unit, Orthoclinic, AZ Sint-Jan Hospital, Bruges, Belgium
2. Department of Orthopaedics and Traumatology, Vrije Universiteit Brussel, Brussels, Belgium
3. Department of Radiology, AZ Sint-Jan Hospital, Bruges, Belgium
4. Ars Statistica S.P.R.L., Nivelles, Belgium