Article History
Received: 16 June 2020
Accepted: 3 October 2020
First Online: 13 October 2020
Compliance with ethical standards
:
: REP received honorarium for educational activities from Zimmer Biomet AND AO Foundation. FB AND SPP declare that they have no conflict of interest.
: The manuscript contains no individual personal data. No consent for publication was necessary.
: This study has been approved by the institutional research ethics committee and has been performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki.