In this video Prof. Bellemans explains the recent concern on the up-classification of cobalt metal as a potential carcinogenic, in view of the fact that many knee and hip replacements contain cobalt.

You can find my book on sport-injuries (only available in dutch) in the link down below:
https://www.standaardboekhandel.be/p/...
If you would like an english version let me know in the comments.

https://gritsportsclinic.be
https://arthroclinic.be

Infographics:   / gritsportsclinic