@corky21 I had one placed in my back. Had L4 and L5 problems. They showed me how to stretch out and i do this every am. No problems since and that was 10 years ago. With the knee i do it every year. Takes a few weeks and then i am good to go. The question i have is how does your Dr administer the shot? Regentative med has so many people doing it . Like stem cells that are sold out of a box.
The DR said i have a lot of arthritis in the knee along with being bone on bone. I do not play tennis anymore but i play a lot of golf, do a lot of gardening, and do biking. I am now 85 and would never go thru a TKR . My Dr takes 19 vials of blood out and spin it etc and then after a wait it is injected.