My daughter came into our bed at 445am for a bad dream. Then she would not stop scratching her bug bites so I, too, for different reasons have been up for awhile. I haven’t read your entire thread but your revision reminds me a little of something my grandmother told me. She has had both knees done and her right knee done 3 times. Not sure of all the details but 2nd time she had some issue with the metal or cement(can’t remember) and when they revised it, she has not had any issues since(15ish years) She is in her 80s, active, still babysits her great grandchildren and gardens. She does not have anything bad to say about her knees and she was a big cheerleader for me when I went to have mine done...that reminds me that I need to call her today. One thing I can say about her is that she is a tremendous woman of faith and extremely positive which she will credit to her recovery. Her cup isn’t half full, it’s overflowing. Just thought since I am up and bored that I would try and throw a little encouragement your way! I hope all goes well for you!