I had TKR done in 2013 at Mayo by just the greatest and most confident doctor I had ever been to. He told me straight out that this is probably the hardest surgery you will ever have bar none. He was honest outspoken and I had trust in him right away. They had exercises that I could do at home on my own. I never had PT. I know how hard this is but just remember why you did the surgery and all the things you want to do in life once you recover and you will. Your focus has to be on getting exercises done with a mission of recovery. You can do this so many already have.