Hi, thanks for writing to HCM.
Based on the description of symptoms, I suspect two possibilities -
(1) INFECTION - to be ruled out by all means before thinking of anything else
(2) METAL ALLERGY - though rare, some patients will have nickel allergy
which forms a part of composition of the prosthetic components used.
So, you need a thorough evaluation to pin point your diagnosis.
Hope this information is helpful. Good day