Kathy, I agree with Yorkimom above. It is very tempting to want to compare your progress with others (and I am GUILTY, too!), but we must try not to do that. Since you and I have had some similar early issues (inhibited muscles, immobilizer, walker, ineffective home PT) I know you will benefit greatly from outpatient physical therapy. Time helps, too.
Something I started doing about the second week was massaging the swollen, hard-as-rock areas with my fingertips. I stayed away from the actual incision, though. This seemed to start everything loosening up a bit. PT has done two deep massages around my knee (at least they feel deep!). It is pretty intense but I think it helps. Yesterday the therapist put on gloves and gently massaged the actual incision line. I am not any more flexible today, but I am trying to withhold my impatience. Today I will attend a noon matinee of "Interstellar", at a luxury style theater with big seats