1 Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg University Hospital, HTRG-Heidelberg Trauma Research Group, Schlierbacher Landstrasse 200a, 69118 Heidelberg, Germany; Raymond Purves Bone and Joint Research Laboratories, Kolling Institute of Medical Research, Institute of Bone and Joint Research, University of Sydney, St Leonards, 2065 New South Wales, Australia. Electronic address: patrick.haubruck@med.uni-heidelberg.de.
2 Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg University Hospital, HTRG-Heidelberg Trauma Research Group, Schlierbacher Landstrasse 200a, 69118 Heidelberg, Germany. Electronic address: raban.heller@med.uni-heidelberg.de.
3 Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg University Hospital, HTRG-Heidelberg Trauma Research Group, Schlierbacher Landstrasse 200a, 69118 Heidelberg, Germany. Electronic address: michael.tanner@med.uni-heidelberg.de.