Update on my knee: the doctor at Mayo basically told me I had to wait a year post surgery before any more tests would be done. My pain has tortured me for almost ten months. I went to another surgeon who ordered a radio active bone scan. The results were clear: a mechanical failure with the prostheses. The implant actually is loose and has caused stress fractures to my tibia. I’m now scheduled to have revision surgery and start all over. 😥