R Kaufmann1,2, J A Halm3, J F Lange4. 1. Department of Radiology, Haga Teaching Hospital, Els Borst-Eilersplein 275, 2545 AA, The Hague, The Netherlands. ruth.kaufmann@gmail.com. 2. Department of Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands. ruth.kaufmann@gmail.com. 3. Department of Traumasurgery, Amsterdam University Medical Centres, Location AMC, Amsterdam, The Netherlands. 4. Department of Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands.