@rguribe I, along with the others, wonder what caused an infection so many years after your TKR. That's something for all of us to be aware of the possibility of it happening. I am about 6 years post TKR on my R knee, and 2 years post TKR on my L knee. I too thought I was out of the woods except for taking an antibiotic before dental procedures. Many orthopedic surgeons don't even suggest that after two years but mine wants me to do it forever.
Looking forward to hearing more from you. I can definitely understand your concern with taking antibiotics forever. I will be interested in hearing what you can find out about that also.