I am wondering if you have a Bakers Cyst which what occurs when the popliteal fossa fills with fluid. It is located behind the knee.
My doctor did an ultrasound on me because I had significant pain behind my knee and down my calf and he wanted to check for blood clots. No blood clots found just this annoying Bakers Cyst.
It has still not gone away but as the surgical swelling has decreased overtime there is not as much pressure on the back of my knee.
I really to feel it when I bend my knee back.
I am 11 months. post TKR and have been told it will eventually go away. I have spoken to other knee replacement people, and they have experience the same thing