Cobalt poisoning in knee replacements

Stem Cell Therapy and Platelet Rich Plasma Therapy when to use bothProlotherapy vs. Surgery

Ross Hauser, MD
Doctors in Finland have released a new troubling study on the release of metal debris from knee replacement hardware. They note:

(The Finnish researchers) determined the levels of metal ions in the blood of 22 patients with metal-on-metal hinge total knee arthroplasty. and the rate of revision (repair surgery) due to adverse patient’s reactions to metal debris in patients treated with metal-on-metal hinge total knee arthroplasty.


And if you are sensitive to cobalt and other metals? Then why get a cobalt replacement?


If you have allergy, imagine carrying that around in your knee.

Doctors in Germany studied patients to determine the prevalence of sensitisation to chromium, cobalt, nickel, or a cement component in patients who received joint replacement surgery.

In this curious study, the doctors “selected patients with a pre-operative known sensitisation to chromium, cobalt, nickel, or a cement component for a post-operative allergic reaction. All patients who received revision surgery because of a potential allergic reaction were followed up post revision surgery.”

Failed Joint Replacement Components Cause Cancer


November 3, 2016: (National Institute of Health) Seven substances added to 14th Report on Carcinogens

*It does not include vitamin B-12, because cobalt in this essential nutrient is bound to protein and does not release cobalt ions.

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1 Laitinen M, Nieminen J, Reito A, et al. High blood metal ion levels in 19 of 22 patients with metal-on-metal hinge knee replacements. Acta Orthop. 2017 Jan 26:1-6. doi: 10.1080/17453674.2017.1283846.[Pubmed]

2 Guenther D, Thomas P, Kendoff D, Omar M, Gehrke T, Haasper C. Allergic reactions in arthroplasty: myth or serious problem? Int Orthop. 2016 Feb;40(2):239-44. doi: 10.1007/s00264-015-3001-6. Epub 2015 Nov 2.[Pubmed]

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