TKR with pre-existing nerve problems

I am a 59 yr old female. I have had nerve issues with my right leg for around 7 years now. I think this initially started from a lumbar disc herniation. This has resulted in a weaker right leg than the other. I have tried Physio etc, but the nerve problems are still there (can't stand on toes, no "push off" for running, weaker right leg, slight tingling). I also have arthritis in the right knee for 7 yrs. It is painful and I struggle to go up and down steps, stairs and slopes. I struggle to bend, sit, stand, get out of cars due to the arthritis. I have arthritis in the other knee, but it isn't as bad. I am awaiting a TKR with a really reputable hospital and surgeon. Probably in around 5 weeks to surgery. Has anyone had a TKR with similar pre-existing nerve issues?