My symptoms are exactly like yours but my TKR is only 11 months out and like you, xrays so implant "parts" are correct and stable. I will likely try having the spacer resized but am hesitant because I have had 4 "second opinions" in two separate cities and 2 indicate they would change the spacer size and 2 want to replace the whole artificial knee with completely different "hardware" so I am very confused and frustrated! Wearing a large, complex brace is helpful in allieviating some of the pain so that I can do more; however, when I removed the brace, pain and swelling immediately returns!