I understand that especially without a diagnosis. Treating something blind and invasively is not wise. I would definitely keep searching for answers. It took me my 9 doctors. It takes others more and years.
Whatever you can stand and as long as you can go. You aren’t some testing funny and you aren’t a character in the tv series “House.” The FDA doesn’t allow human experimentation and testing even in a hospital and by specialists.
Keep searching. Get people around you, friends or even foes, it doesn’t matter as long as they believe you right now, and find out what’s going on with your body.
Is it an immunological or endocrinological problem related to the prosthetic?
Is it a physical issue such the muscular and skeletal interface with the prosthetic or a result of the surgical procedure and/or revision?
Does the pain migrate from or to the area described or remain fixed, increasing and/or decreasing in intensity in that area each time?
What does the pain feel like and what category or categories of pain would that place it in? Soft tissue (including muscular, tendinitis, etc,), skeletal (such as bones, cartilage, joint, etc.),
Sorry, I crashed mid post.
Does the pain shoot or spike, burn, radiate from a particular area (nerve or neurological), increase or decrease on its own for no apparent reason?
These are the questions you need to have answered but they need to asked by specialists in context with specific testing in their field of expertise to rule out specific disease states.