So I am really worried about next week, my 2 week check in. I am supposed to be at a 90 degree bend, and today at PT, I only measured 67 degrees. I'm doing all of my exercises, and if anything, doing too much. I am going to take it easy this weekend and see how it goes, but I am scared the doctor is going to want to do a manipulation...if that's what it's called.
I hope your appointment goes well but, as the others said, don't worry if your surgeon is disappointed. His goal of 90 degrees by two weeks is very optimistic. My surgeon doesn't expect that until at least 6 weeks.
If he mentions MUA, just say that you would like to wait a while. There's no need to rush.
right now, the main reason why your knee can't bend more is because it is still wounded and swollen. It's like a hosepipe that is full of water. That doesn't bend easily. But, if you empty out the water, the hosepipe can bend much more easily. The same is true of your knee. Get rid of the swelling and the bend will come, without any need to work at it.
So, spend as much time as you can doing this, to try to reduce that swelling:
rest,
elevate,
ice and
take your pain meds by the clock
You don't have to do lots of exercises to rehab your knee. In fact, doing too much can have an adverse effect, making those wounded tissues irritated and inflamed, which will increase the swelling. Having a manipulation at this stage would further damage the soft tissues, making the situation even worse. In any case, there is no need to rush, because ROM (Range of Motion) can continue to increase for a year or more after a TKR.
TKR: work “smarter” and not “harder”
Myth busting: the "window of opportunity" in TKR
Oh, and I have one more thing for your boyfriend to read, just to remind him that you are not swinging the lead or milking your recovery. This article gives guidance on what your level of activity should be:
Activity progression for TKRs