Bursitis is really hard to get rid of, isn't it? I have had it now for months and also had a TKR. My physical therapist wanted me to do more therapy exercises, but everything I did seemed to make the symptoms worse. I dropped a lot of therapy exercises that required weights and straps and standing on 1 foot. That helped, but I didn't know to stop the indoor bike. Later I learned that repetitive strain on the knee makes bursitis worse, not better. All I do now is walk slowly for short distances 2-3 times a week. Finally I was able to see the physiatrist who fixed hip bursitis for me a year or so ago. When diagnosing he didn't have to get imaging. He has been in practice for 30 years. He asked about my symptoms and then reached over and put a finger on either side of my knee and squeezed ever so gently. I yelped and he said it was pes anserine. Then we talked options and went to shockwave as a first choice for treatment. This injury is more extensive and older than the hip was, so after 4 treatments I am only mostly healed, while the hip was cured in 4 sessions. If you decide to try shockwave, know that you can't take NSAIDs or cortisone while you're doing it. Shockwave gives pretty rapid relief after the second treatment. It's not covered by insurance, but personally I feel so much better so much faster that I don't mind paying out of pocket. Best wishes to you in your search for relief!