I am so thankful for my physical therapist. I have been doing my exercises like instructed, doing the stretches more than needed but did not seem to be progressing. It seemed that no matter what I did, I could not get my knee straight and the nerve pain was getting worse. When discussing all this with the therapist yesterday, she decided to do a stretch to my back. It worked! I was able to straighten my knee immediately and the nerve pain had diminished greatly. Apparently, because my knee was so bad for so long, it threw the lower part of my back out compressing a nerve. Stretching helps release it. I have to do the stretches and back exercises several times a day, but am so thankful that at least I now know why. Hope everyone is staying safe and others will be able to have their surgeries soon.