I had a total hip replacement 6 years ago. I was so afraid of infection because I have something called Primary Immunodeficiency and don't make my own anti-bodies to bacteria or viruses. I do sub-q infustions at home with other peoples IgG plasma to get their antibodies. ( a mild "boy in the bubble" disease). I am 82 and actually pretty healthy in spite of the crazy situation. I have been doing fine with the replacement and walk for exercise. A few weeks ago I started to get groin pains in the same hip that was replaced. This is exactly the way it started the first time. I have an appointment next week with the PA at the ortho. This time I'm really concerned about having to go through it all over again.