Hi and Welcome to Bonesmart!
I agree with Jacey, the MUA and this aggressive pushing on your leg is not helping you. Honestly, I don’t understand how surgeons and PTs can think this helps.
Your knee/leg has been through a traumatic surgery and it needs time and gentle treatment so it can heal. It’s a newborn baby knee and should be treated as such.
Stop allowing all this forcing. You do have the right to say no, it’s your knee, not theirs
Saying no to therapy - am I allowed to?
Try following Bonesmart’s gentle approach to recovery. Many have and had very good results.
Regaining our ROM is more about Time than repetitions of a list of exercises, or forcing the bend.
Time to recover.
Time for pain and swelling to settle.
Time to heal.
Our range of motion is right there all
along just waiting for that to happen so it can show itself.
In the general run of things, it doesn't need to be fought for, worked hard for or worried about. It will happen. Normal activity is the key to success.