This is interesting, I saw a orthopedic surgeon for my knee and lower leg pain 2 years ago, they wanted to do a knee replacement but I shattered my femur many moons ago and there wasn't enough bone left to do the replacement in my opinion, so I declined. I have a metal plate from hip to knee and screws in the top of my hip as well so not a good candidate for that. I wonder if it's spine related and not the knee. I am loosing the use of my left arm too as the shoulder is hurting like something is broken but I had breast cancer with a mastectomy and all my lymph nodes removed so they won't touch my shoulder surgically. I have had spine issues since childhood and now I'm thinking that there is permanent damage since the L3-L5 were actually pushing on the spinal cord. Maybe that's the answer to all of this, the spine has so many nerves. My appointment is this Saturday and I am going to print this thread for my doc. Thanks for sharing, I am going to have to learn to live with pain as it's gotten worse since surgery. Went to ER last Friday, now with swelling in my calves and ankles. No blood clots found or any fluid around my heart and lungs. Numbness is getting worse. smh