I went to PT twice after my first replacement. I quit because they were putting heat on the knee and they hand you off to kids that don’t know what they are doing.Candidly,I think there is a lot of rip-off in PT because of the exponential increase in business from baby boomers. What I did was to go back to my yoga practice and stationary bike,seat high and spin…no pressure. It took me a year to get over my surgery. My wife had surgery and was back to work in a week…men are wimps! I have had two knee replacements and a hip at Mayo and no prescriptions was giving for PT. My wife has two hips and two knees and no PT prescribed. Mayo did give us a list of illustrated exercises and said most important just move. Be compassionate with yourself, a knee replacement is a tough operation. I also recommend do not let your doctor operate on you again! If you can get into Mayo go! Mayo doctors are paid on salary,they have no need or incentive to operate. My first problem knee I went to two orthropedic doctors in my home town, Both told me,we need to operate ASAP! I went to Mayo and Dr. Pagno told me,you need to do nothing immediately and delay until you knew it was absolutely needed. I push the operation out 5 more years…this is important because the prosthesis may fail with time so you want to die before that happens. It doesn’t cost anymore to go to Mayo,just travel and lodging.If you go to their site, Mayo Rochester, Minnesota there is information on their site. My first knee doesn’t completely straight out but I don’t how it compares to yours.I can do everything I want to do,except run; but I do Zumba 5 times a week…I’m 72. I know each person’s genetics and situation is different. I suggest you find the PBS film on Mayo to have a better understanding of why it’s the worlds greatest medical facility.I also suggest you go to U.S. News and World for a list of hospitals ranked by excellency in a variety fields.You may find a top rank orthopedic hospital close to you.You can also research top doctors by speciality. Unfortunately most doctors are motivated by money…it’s the human condition and much money is being made by orthopedic doctors…aging of baby boomers.My opinion is you are overworking your knee…I would quit PT and use the stationary bike and just move as best you can.Most important be compassionate with your self…healing takes time.You can’t push through to speed it up! Elevate your legs…legs up the wall ( check net, YouTube on how),ice and use Tylenol for pain…I’m so sorry for the pain and suffering you are going through. Again be compassionate with your self… that saying no pain no gain,that doesn’t apply to knee replacement…time, patience and understanding that you will eventually get better is what it takes. Peace!