Received: 14 August 2018
First Online: 21 September 2018
Compliance with ethical standards
: CB, RC and CB declare that they have no conflict of interest. PN: consultant for Smith and Nephew, royalties from Tornier-Wright, institutional research support to Tornier-Wright and Amplitude. ES: consultant for Corin. SL: consultant for Smith and Nephew, institutional research support to Corin and Amplitude. No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this article.
: All procedures were performed in accordance with the ethical standards of the institutional and/or national research committee, the 1964 Helsinki declaration and its later amendments, or comparable ethical standards. The Advisory Committee on Research Information Processing in the Field of Health (CCTIRS) approved this study in Paris on February 17, 2016 under number 16–140. As per institutional standards, formal patient consent is not required for this type of study.