I had a PKR in my right knee on the outside as that is where my arthritis was severe. I was doing well for the first 5 weeks and then bam, out of the blue, searing burning pain and a deep ache that I cannot describe. Doctor said he thought it might be overworking of my MCL, but I am not convinced. The pain is EXACTLY the same as what I had prior to surgery. The area where I had surgery feels fine, but the rest of the knee not so much. I am starting to wonder if I should have had a TKR, or if this is nerve pain that is not even related and that might have been what my issue was all along. I am pretty miserable right now as I am scheduled to have my left knee done in a few weeks, and this pain is going to delay that surgery. I just want to get it done. I take ibuprofen like all the time for pain and it helps for a little while but not for long, hence why I wake up in the middle of the night almost crying in pain because I cannot get comfortable with my knee bent or straight. I walk OK but by the end of the day am limping again. I do PT exercises and am very good about staying on top of it but if I do activity, sometimes it makes it worse. I ice and elevate too and the knee still has swelling. Sometimes the burning pain suddenly strikes and makes me jump out of my chair. I don't know what to do about it.