I have an uncle who has had both knees and a hip replaced done in the traditional style. He gets around fine, but he was a former NFL player and even in his 70's he is healthier than most folks.
"Never Trust Government" -- Smart people. "The Great thing we should Fear and the Weird Thing we Trust is Elon Musk" -- Me "You can be broke but you cant be poor." -- Ruthie-May Webster