How long should I expect my knee replacement to last?

Hi Mr Imbaldenier, I think we'd be really grateful if you could explain to us implants for knees. We used to think they last, what, a decade or so? Things have changed there haven't they? Yeah, so we're hoping now when a patient might need a knee replacement for a worn out knee, we're now hoping it can last 20-25 years. That's the current expectation. And that's from some registry data or trial data that's come out? Yeah, so there's good national joint registry data showing that implant survivorship is lasting longer but to be honest we we don't really know till our current patients have these implants in for 20-25 years. The reason we feel they'll last that long is because they're tested in laboratories normally with robots simulating the wear patterns of these implants, these materials and it seems that if we put them in correctly in the right patients they'll last a very long time. That's probably because the materials we think are better and also because we're starting to use slightly more modern techniques of putting the knee implants in like computer-guided surgery or even robotic assisted surgery where these were some technologies helping us be accurate now to 0.1 of a millimeter and 0.1 of a degree. Thank you.