Received: 1 November 2018
Accepted: 20 November 2018
First Online: 7 December 2018
Compliance with ethical standards
: Gregory Difelice has served as a consult for the company Arthrex and recieved research support. Jelle Van der List served as a consultant for the company Arthrex. Atesch Ateschrang recieved research support from the company Mathys. The remaining authors declare no conflict of interest.