Competing Interest and Funding
This study was supported by a research grant from B.Braun Aesculap. JL has received research grants outside the submitted work from Arthrosehilfe, B.Braun Aesculap, Innovationsfond, Link, Mathys, Smith&Nephew, ZimmerBiomet and honoraria from B.Braun Aesculap, Grünenthal, Mathys and Pfizer.