My replacement hasn’t been right since day 1. It’s been two years and I’ve had PT, have exercised…specifically to strengthen areas surrounding the knee…and I’ve had multiple surgeons tell me I need to start over. They look at the x-rays and tell me that the alignment looks good but that it’s obviously loose. I just saw a surgeon that says the issue is that the spacer that was put in is too thin which is what is causing it to be loose so they said they can replace that instead of starting over. After two years of pain, I hope he’s right.