Is There a Knee Replacement?

It's a constant pain where it's bone on bones. There's no cartridge in my knee at all. It groans, it creaks, it grates. The pain levels are excruciating. Yes, there are days when i've sat in the house and i've cried because it hurts. Ecause eventually will happen. Hopefly, id be able to play winh my grandchildren. Youknow, i can't go running with them. Even getting down on the floor to do puzzles and wetever, i find that hard to do. I haven't done the leg ones yet, so'm dreading what thas es sounds like. What difference would a knee replacement make when