It seems that I can safely say that the Synvisc injections worked again.
I couldn't have said that yesterday.
In fact, I was beginning to get quite concerned when they were still visibly puffy and inflamed yesterday -- a full week after getting the final injection.
My massage therapist worked very carefully around both knees but after she left, they were both so sore I could barely walk. I applied ice to both and that settled them down quite nicely.
Now this morning, there is no puffiness, practically no swelling, and absolutely NO pain when I walk.
Even stairs are managed effortlessly.
What a relief. On more than one level.