If that scar tissue didn't build up, your cut tissues would never grow back and remain opened. What he's trying to lead you to believe is that adhesion is building up that fast and that's just not true.PT said scar tissue builds up from the moment they cut you open, so how does the slow/gentle method keep that from happening?
Yes, the number-obsessed PTs will rattle on about it as if the big. bad "scar tissue" is just sitting there, waiting to pounce if you don't do enough exercise.
Actually, it's quite the reverse. The infamous scar tissue (which is more correctly called adhesions) is very rare, and one of the easiest ways to develop it is to work your knee too hard. Over-worked knees get inflamed and hot, and hot tissues become drier than normal and more likely to stick together and form adhesions.
This article explains the difference between scar tissue and adhesions:
MUA (Manipulation under Anaesthetic) and Adhesions
You need normal scar tissue. That's what holds your incision together, and it's part of the normal healing process. Without it, you'd always have an open wound.
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. Quit going to PT until your swelling goes down. All these exercises are doing is inflaming your knee and setting back your recovery. All your knee needs to recover is your daily activities, rest, ice and elevation.