I’m 3 weeks out from knee replacement and have experienced the same issues you have with the scar tissue. It is very painful and nobody told me about this part of the process. I began outpatient therapy yesterday with a new therapist. She elevated my feet out the e-stem machine on the 4 corners of the knee, avoiding the incision. She then out cold packs right out of the freezer in it and set it for 15 minutes as high as I could tolerate the electric stimulus. At first it seemed comfortable but the last about 4-5 minutes is almost more than I could handle. Next time I’ll ask that she not out the ice packs directly on skin as it burns. Afterward I had leased pain and could move the knee a little more.

I think if I were you, have dr write a script for an at home tens unit and try to duplicate something like this at home. My insurance bobs did pay for it 100% - maybe your wil to. If the dr is aware of your situation see if you can get therapy 5 days a week for awhile. The pt I go to is also going to use hydro therapy in the pool once my incision is completely healed in about a month. Said it would help in movement but also in breaking scar tissue. Maybe find someplace near you with a pt with a pool- they are out there and I can’t wait to get started in moving again.

Until then I feel your pain and nobody that hasn’t experienced this cannot imagine the intense pain that comes with it. I’m sick of the almost constant pain and discomfort. Hang in there, I know it’s hard. Find a way. Rad about therapies online and ask a lot of questions and don’t take no for an answer!