Uploaded January 2024 | Updated September 2026, 22 hours ago

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Ravi is a 47 year old man with knee pain - little did he know this was a sign of something much more sinister.

This video was adapted from a medical case report published in the Canadian Medical Association Journal. Click to read the original case!
cmaj.ca/content/cmaj/195/22/E782.full.pdf

Thank you to Medicins Sans Frontieres for sharing their educational animations for the video! youtube.com/user/MSFCanada.

This video is made for educational purposes only and should not be viewed as medical advice. Speak to your doctor if you have any concerns about your health.

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📸 Image Credits:
- Normal knee x-ray: Case courtesy of Andrew Dixon, Radiopaedia.org, rID: 36689
- www.scientificanimations.com, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
- By Todd - originally posted to Flickr as 0356, CC BY-SA 2.0, commons.wikimedia.org/w/index.php?curid=5193859
- MSF video on TB: youtube.com/user/MSFCanada