Footnotes

• X @torsteindalen, @JohnBjorneboe, @JHaroey, @DocThorAndersen

• Contributors TD-L: first draft and conceptual idea of the manuscript, review, editing and writing manuscript. JH, JB and TEA: editing and reviewing of the manuscript.

• Funding The Oslo Sports Trauma Research Center has been established at the Norwegian School of Sport Sciences through generous grants from the Royal Norwegian Ministry of Culture, the South-Eastern Norway Regional Health Authority, the IOC, the Norwegian Olympic Committee and Confederation of Sport and Norsk Tipping AS.

• Competing interests None declared.

• Provenance and peer review Not commissioned; externally peer reviewed.