Best joint replacement hospital/doctors for 5th replacement?

I have a family member that just found out they have an infection in their 5th hip replacement. She has had 5 replacements on the right and 4 on the left. It has been a life time battle and she has just found out that this 5th one is infected and has to be replaced. She has to use a different doctor every time because they all retire or move. I'm trying to find out what hospital and/or doctors are the most renowned joint replacement facilities. This will probably be her last chance to get it right and I desperately want to get her into see the best. Her hips are horrible and so damaged, but someone could get an awesome article published from working on her. Who do they say is the best? Please help me find someone more talented and educated than just an average ortho surgeon!!!!