1 From the Department of Surgery (R.B.B., R.M.H., F.H., L.P.H.L.), University Medical Center Utrecht; Department of Surgery (R.B.B., M.V.H.), Diakonessenhuis, Utrecht, the Netherlands; Harvard Orthopaedic Trauma Initiative, Department of Orthopaedic Surgery (A.R.B.), Massachusetts General Hospital, Boston, Massachusetts; Department of Surgery (D.V.D.V.), St Antonius Ziekenhuis, Nieuwegein; Department of Surgery (D.P.J.S.), Radboud University Medical Center, Nijmegen; and Department of Clinical Epidemiology (R.H.H.G.), Leiden University Medical Center, Leiden, the Netherlands.