When I mentioned finding a knee revision specialist, I spoke from experience. Most orthopedic surgeons will simply refuse to do revisions and ask you to go see a revision specialist. They are trained specifically on how to find out why the replacement went wrong and hopefully repair it. I had a ortho say he could do it and I personally don't think he was qualified. I was in twilight sleep and heard him say, "This thing isn't even glued in!" It turns out I had a faulty knee replacement part and it couldn't attach to cement. The cement was gone. I also had a fractured tibial plateau which they tried to repair with cement. Nothing wanted to work. Now I'm walking around with a new tibial implant, the femur portion was intact. It is loose again, the fractured portion has literally been absorbed into the bloodstream and I'm terrified to get the 3rd and final revision. I'm holding out as long as I can. I have found an excellent revisionist at Cedars-Sinai who I will probably go to for help when it becomes too much to take. My other knee is ready for a replacement as well and I'm holding on that as well. My experience has not been good and I'm perfectly sick of it!