@MtnSearcher I hope that I get to see my OS at my six month followup, this coming March. That must be frustrating to get the PA after months of waiting, building up a list of questions, etc.
Sitting still is evil. Try to reduce that as much as possible. Foot on a skate board? Sit on a Swiss Ball?
My knee still clunks, but mostly when it is in the air (swinging foot forward while walking for instance). I can feel the vibration all the way up at my hip bone. That effect might get less as my ligaments shorten to their appropriate lengths. I'm hoping.
How is your pain when first getting out of bed? "Escaping the covers" is always uncomfortable for me, and I have some scary pains in the first hour or so after getting up. Did this get less for you in months 4-6?
I also have the quad weakness big time. My operated leg shrunk almost two inches. The other one is pretty weak as well. It is a loooong term project for me to get strong legs. I don't build muscle quickly, or easily.
I'm having a hard time imagining what your "lump" looks like. How far back, around the side, is it?
My only "lump" is a hardening of the quad tendon, just above the kneecap. My PT says that every TKR person he has worked on has that hard spot. So, he thinks that it will be permanent. Mine is getting smaller, via massage.