@hello1234 I have had both knees replaced, so far my hips are not arthritic, they just have bursitis and one has sciatica. The first orthopedic surgeon did not suggest lifetime amoxicillin but the second one did. He is really great but he is cautious. I presume he must at some point had a patient affected by dental work beyond the typical two years when amoxicillin is usually advised.

I had my liver transplanted. I had my first knee replacement before my liver showed problems. I was planning to have the second one done when I was not yet diagnosed with cirrhosis but having problems, one being low platelets. I was put on prednisone for two weeks by my hematologist to help get my platelet count up and it seemed to help but on the morning of the surgery the count was not good enough for the surgeon to operate so it was delayed. I was outside of the OR, all set to go in for the surgery, intravenous in my arm and all, when the surgeon came out and told me the bad news.

It ended up being a long delay because that was in February of 2014 and my transplant was in September 2016. I could have had the TKR 6months after my transplant but I couldn't bear the thought of being in the hospital again so soon so I waited a full year.
JK