Thanks for that advice, ladies. I feel a bit better now. I have no idea what my flexion was before surgery, but it was better than now since I could bike comfortably and now I lift my hip slightly and it's uncomfortable. Honestly, that's the level of flexion I'd like to get at - being able to bike and go down stairs comfortably. Beyond that, I don't really care. I'm very functional in other aspects. My physical therapist has said in the past that she didn't think it was scar tissue build up. She will have me sit on a bench and gently push until I tell her to stop due to pain. She says there's some "give" when I tell her to stop. She says she could keep going, but my pain is what is stopping her. She thinks it's my muscles not wanting me to go further, not scar tissue, as that would feel like a hard stop, in her experience. Not sure what to think. The surgeon says I should push through pain. I don't know how I feel about that. But, my flexion has not made the gains I have wanted. I guess tomorrow I'll have more information since I have a PT appointment and haven't been there since last Wednesday. I'm taking a 3 week online knee bending course through succeedcourses.com with PT, Dr. Samantha Smith. She has you do exercises 3 times a day. I'm pretty much doing that since some of the exercises are what my PT has given me. I'm in the 2nd week of the course and I'm curious if I've made any gains since my PT last week.
Update: I clarified with the nurse something I forgot to ask the surgeon. What would be the minimum flexion the surgeon would want for me to avoid manipulation. He responded that if I make progress, even if it's a little bit, he wouldn't move forward with the manipulation. Only if I make no progress or regress. Makes me feel a bit better!