I had TKR May/July 2019. I am in constant pain. My last one is the worst. I have problems walking and can’t stand for long periods. My doctors say everything is seated correctly and that they see no problem with the replacements. I was wondering since I’m allergic to metals could this be the reason it’s not doing well. My doctor was aware of the allergies and put in Titanium implants but since I’m even sensitive to it could it be causing a mild form of sensitive. Which is causing these symptoms?