I am scheduled to have my left knee replaced in December of 2014.
My understanding of the procedure is that they use a saw to cut off the top of the bottom bone (the one between the knee and the ankle) and to cut off the bottom of the top bone (the one between the knee and the hip). Then they screw stainless steel replacement parts to the bottom of the top bone and the top of the bottom bone. Those stainless steel parts are fastened to the ends of the bones with ordinary screws and look very much like the pieces that were cut off, apart from the fact that they're metal instead of bone. A teflon disk then fits between those stainless steel parts. And then they sew you up. Within three days time you're walking and they have you climbing stairs within 5 days.
Can you kneel down on your artificial knees? Is there anything that can be done to make kneeling easier, or less painful? My understanding is that kneeling will not harm artificial knees, but it just feels awful when you kneel on them.