Hello @jcmoffatt, Welcome to Connect. I'm sorry you are having to fight for long term disability. There is another discussion on Connect that you may want to read through here:

Groups > Bones, Joints & Muscles > I received 2 hip replacements and then developed cobalt & chromium.
-- https://connect.mayoclinic.org/discussion/i-am-one-of-thousands-that-received-2-hip-replacements-and-then/?utm_campaign=search

I'm tagging our moderator @kanaazpereira to see if we should move your post to the discussion above so that you have more visibility. I also found a link that I think may be helpful for you:

National Health Institutes - High blood metal ion levels in 19 of 22 patients with metal-on-metal hinge knee replacements
-- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5434594/

@jcmoffatt have you talked to your doctors about what can be done to help you?

John