Funding for this research was provided by:
Received: 21 November 2019
Accepted: 25 May 2020
First Online: 3 June 2020
Ethics approval and consent to participate
: This study followed the guidelines of the Declaration of Helsinki. The institutional review board “Ethikkommission, Ethikausschuss 1 am Campus Charité – Mitte” of the Charité – Universitätsmedizin Berlin issued its approval (reference number EA1/306/14). Written informed consent for all patients was obtained (public clinical trial identification, ExternalRef removed, NCT02530229).
: Not applicable.
: C.M. and S.C. report no conflict of interests. N.R. and E.M. report a grant from the PRO-IMPLANT Foundation. C.P. reports personal fees from DePuy/Synthes, personal fees from Smith&Nephew, grants from Aesculap, personal fees from Zimmer/Biomet, personal fees from Link, all outside of the submitted work and A.T. reports research grants from Zimmer/Biomet and Heraeus medical and personal fees, all outside of the submitted work.