Hello, I have seen a lot of people with similar stories of chronic pain in their knee after surgery. My experience: I had a total knee replacement although I worked very diligently with Physical Therapists and followed their instructions of what exercises to do at home, I still had extreme pain every single day.Upon the advice of my Ortho, I had a manipulation procedure. Skipping on past months, nothing I could do would relieve the pain short of sitting doing absolutely nothing but elevation and ice therapy. My pain management Dr. performed a Genicular Nerve Block. Nope, that didn’t help either. Skipping on past months more, injections and water retention aspirations didn’t help either. Then my Ortho decided the only thing to do was to go back in for a little clean up (knee scope). That proved to be not of any use. It’s now two years after my replacement. Things are going downhill at a faster pace. I finally convinced another Dr. to take a look at me because you know the other Orthos don’t like to take on someone else’s patient. Anyhow, he immediately started ruling out causes. Tested for metal allergies, blood tests for infections, Nuclear Bone Scans for hard to detect hiding infections. You name it, he did it. I had mentioned to the original Dr. and now to this new Dr. that I had had such a hard recovery from the surgery that something right from the start must not have been right. My original Dr. thought it was laughable when I asked him a few times if perhaps the wrong sized implant was used . My new Dr. took that question much more seriously. The findings from all the tests showed loosing of the parts of the initial implant. My new Dr. also confirmed with imaging that the femoral part of my implant WAS too large for me causing the slow painful loosening of the whole knee implant. I was very wary but hey what could I do ? I couldn’t live like that any more. Yes, I agreed to the revision and oh my gosh ! from the very first day I could tell a big difference in the way I felt. My pain and swelling was hugely less, my progress with Physical Therapy was 100 % more successful. My recovery time was amazing much easier. If there seems to be no explanation from your Ortho about very chronic pain my suggestion would be to find an Ortho to take your question of if you have the correct sized parts for your body implanted into you. You know how it is, when you go to your follow up appointments, you’re always told that there’s no problem everything looks like it’s lined up just fine. I found out the hard way that this is a more common problem than you think. I couldn’t believe it myself ! And yes, as some of you have stated my original Ortho Doc was as mad as a hornet that I had gotten another opinion. THAT’S YOUR RIGHT AND THEIR EGO PROBLEM. Hope my story might help someone else out their with unexplained seriously painful chronic pain on a daily basis.