I'm right at 3 months after replacement and sure still have a lot of stiffness bending to the back. The stiffness seems to be all the way across the top of the knee when I bend it to the back. I'm through with PT so I'm on my own for exercises. What is your rate of stiffness after this long? My surgeon said it would take up to a year for it all to go away. I don't want to wait that long!