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Contributors HM created the infographic and wrote the accompanying text. DMB provided guidance, feedback and edited and reviewed the infographic and accompanying text. AMJG provided guidance, clinical expertise and feedback and edited and reviewed the infographic and accompanying text.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests AMJG has received royalties from Smith & Nephew and Graymont Inc. and consulting fees from Smith & Nephew, Ossur and Olympus.
Provenance and peer review Not commissioned; externally peer reviewed.
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