Hi readymade, Josephne, Pumpkin, Zzevi, smarttoys and others have given you great advice, here, and I'm so glad I found this site on one of those middle of a sleepless nights I had. You'll see from my signature that I'm only 3 days ahead of you, on my left knee...which is not as confused now, thank goodness...it's still a bit angry at me, though!
I suspect they're referring to an MUA that they will want to do (charging you again for that procedure, too, of course!) as I've also been threatened with that at my last appointment with my OS this week.
Like you, my ROM isn't ideal, at my last OS visit only 12 - 80, so I was given the "dreaded MUA" talk, at my 6 week follow-up visit. So, now I am told I'll have to have an MUA in a month if I'm not at 0 and 100 degrees. So, FWIW, I'm not going to do the MUA at that time, I'll tell them I want to wait to see how I'm doing when I'm 3-4 months out, but I am doing as much as I can, without causing too much pain, to increase my work on it, though. They wanted to sell me a board with straps that has a raised foam shelf on one end that I was to strap myself into 10 minutes a time, 3x a day to help increase my extension towards 0. But, before agreeing to take it, I asked to be informed of how much my insurance will cover...because 'fer gosh sakes: I could make the thing myself out of foamcore and a thick piece of the stuff that computer stuff comes in, that thick foam bedding! And for that matter, my couch isn't as firm a surface, but the arm rest is raised about the correct amount...or other similar methods of getting to the same kind of thing.
The other thing they told me is that I should increase my pain meds to the point where I can work through more of the pain and get more ROM. This after here in the US we're hearing all the time about the epidemic of opioid overuse and deaths and addiction. But, okay, I am using the meds as they suggested, and taking them ahead of the time periods I plan to push myself more in ROM exercises.
So, it seems that here in the States, we're under the influence of doctors and a system that believes in the no pain no gain model of care, even though we're not healing from an athletic injury, where perhaps that model is seen as more appropriate, but from surgery, where the healing is a bit different. They seem to believe the same model of care applies. My PT has been pushing me, too, but I've known her for years and she is much more humane than many are. She knew I'd probably get that talk on Monday, as I did, so she and I have been working on the ROM more, too. She did a really cool thing yesterday: she lifted my skin and surrounding tissues up a bit off the knee and had me move through ROM slowly, to see what that felt like and it was quite impressive: without that tissue pressing down on my knee, it moved much more freely! She thinks that as the swelling continues to decrease, I'll indeed find the ROM that is there. I'm using a TENS type of stimulator too, that I borrowed from my daughter, to stimulate the are right next to the incision to help decrease scar tissue and it does seem to help that area too. She also does ultrasound on the sore areas too, almost every time and now can press more and the knee tissues are much looser and less tight than even a week ago.
I'm also using a pain cream that someone on this forum mentioned, and although mine is a different formula, it works quite well to calm the hypersensitive areas around my incision and in the swollen tissues adjacent to the knee that are causing the restriction.
I'm also very fortunate to have found a good PT that does listen to me and I told her my intention is to not do the "dreaded MUA," I call it, but to indeed give it the old college try and see how much ROM I can recover by the time I see the OS again. Part of my issue has been (if you read back in my story) that I was unable to get anyone to listen to the problems with pain I was having and sleeplessness for over 2 weeks. I was unable to make ROM progress at all then, so being behind in my goals is partly due to their gatekeepers not listening to their patients and blowing us off. I told him how unhappy I was about that, and that it was unnecessary and I finally had to see my PCP to get any help. She told me to call and get an appointment that week for a knee expert and not to take no for an answer! (She's feisty!)
So, I'm happy to keep in touch with you, too, as we buck the system here! Hang in there and we just have to realize we're bucking an entrenched system that has a belief structure that is very ingrained. Any time you go counter to what they believe is right, they feel challenged and want to try to scare you into compliance. I may take in a printout of some of the discussions here about how it is done differently in other places and folks still get back their ROM over a longer period of time, most of them, at any rate! I doubt he'll read it, but he did write down the formula for the pain cream and knows where I got it, and although he may not have realized he approved it (he seemed not to) he was on board when he heard it was helpful to me.
Will keep you posted on how my ROM improves over the next few weeks, but try to read more about successful outcomes here, too, and you'll see that the preponderance of the evidence is that your ROM comes back as the swelling retreats!