Revision or second total knee replacement. It is the same amount of time as with the first one. Before you do anything please, please get a second opinion before you go back to the same doctor.
The revision takes long in the operating room. Because they will put in a larger one, have you seen your x-rays, get copy's to take with for a second opinion and all medical records. I am still in pain, I can sleep at night The pain go down to my foot. God be with you. I hope this helps.

Go ahead with the scraping. I could not bend my knee at all And the doctor said he didn't think I would get more than a seventy degree bend. I told him I couldn't live with a straight leg so had to give it a try. I now have 110 degree bend. Dr was amazed at my progress. Recovery was a bit easier than with the total knee replacement. The doctor put in a dozen large suitors to hold everything together in my knee. Those sutures caused me a great deal of pain. A year later he removed the sutures and now things are much better. You will need physical therapy all over again. When I was able to swim again doing exercises in the water really helped. I also use the hot tub at my fitness center which makes a big difference too. I also use fins and a kickboard to do laps which really works your quads and your knees. that has made a huge difference. Good luck.

I was in a lot of pain before. After not as painful. Was able to pt and steadily improved. I personally rented the flexionator to bend my knee which really helped. Also bought a recumbent bike which helped. You should definitely do the surgery. I had nothing to lose. Knee still stuff but can bend 110 degrees and walk without a limp. I can go up and down stairs slowly. I was a very active person before all this started so disappointing that I can't run, play tennis, hike. But I don't have the constant pain and can function.