Received: 20 August 2019
Accepted: 17 March 2020
First Online: 30 March 2020
<!--Emphasis Type='Bold' removed-->Compliance with ethical standards
: Nanne P Kort is a paid consultant for Zimmer-Biomet, Stryker, BodyCad, Supportho, and Bioventus. Nanne P Kort is a principal investigator at Zimmer-Biomet. Nanne P Kort is a committee member and the Dutch Orthopedic Society (NOV). All other authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: There is no informed consent text since this study was based on database research only and without direct contact with patients.