1. Center for Orthopedics, Trauma Surgery and Spinal Cord InjuryHeidelberg University Hospital Heidelberg Germany
2. Laboratory of Biomechanics and Implant Research, Center for Orthopedics, Trauma Surgery and Spinal Cord InjuryHeidelberg University Hospital Heidelberg Germany
3. Department of Orthopaedics and Orthopaedic SurgeryUniversity Hospital Giessen and Marburg (UKGM) Giessen Germany