When I pointed this out, I was told that everyone can bend with swelling. How come a majority of people can bend well after surgery as they must have swelling too?
Some lucky people seem to be able to bend while they still have swelling, but some can't. Just luck, I think!
MY last TKR was very swollen and it didn't bend at all, not one little bit, for 5 days. Then it just started to bend a little.
I didn't do any PT, but just walked around the house a bit. I did rest, elevate and ice almost constantly. One day, about 2 weeks post-op, I was sitting up at the dining table and I discovered, by chance, that my knee was starting to bend. From then on, my bend progressed slowly.
I was fortunate, because my surgeon doesn't allow any PT at all for the first month after a knee replacement. He says your knee needs that time, to start on its journey of healing. For that month, we rest, ice and elevate our leg, and walk around the house.
After that month, we just go to PT once every 2 weeks, where we are shown a few new exercises to do at home.
His patients all do well and achieve good ROM, as I did, and he hasn't had to do a manipulation to help with ROM for the past 4 years. I think that speaks for itself.
My surgeon doesn't ask about ROM numbers. He just looks at my knee and says "show me what you can do." I show him my straight leg and then my bend and he says "Great!"
He always says that function is more important than the numbers.
One thing I'm sure of is that your knee is stiff because of swelling, not because you have bad scar tissue (adhesions). Your wounded knee tissues are upset and inflamed and they need time and gentle treatment, so they can settle down. If you have an MUA, your knee will be bent forcibly. That will cause some tearing of soft tissue, which will cause more inflammation and swelling. Having an MUA virtually sets your recovery clock back to zero.