- Physical activity guidelines: UK Chief Medical Officers' report. GOV.UK. www.gov.uk, published 7 September 2019
- Acute knee injuries: Chapter 35. Bruker & Khan's Clinical Sports Medicine (vol 1. 5th ed, online). csm.mhmedical.com, published 2017
- Knee pain. MSD Manuals. www.msdmanuals.com, last reviewed March 2018
- Knee conditioning program. American Academy of Orthopaedic Surgeons. orthoinfo.aaos.org, last reviewed October 2018
- Personal communication. Lucy Rath, Senior Physiotherapist, Bupa, 15 January 2020
Reviewed by Alice Windsor, Specialist Health Editor, Bupa Health Content Team, January 2020
Expert reviewer, Lucy Rath, Senior Physiotherapist, Bupa
Next review due January 2023
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