Jerry,
My Orthopod used this stuff. Synvisc 3 injections 2 weeks apart. At first I thought it was snake oil but it actually worked. After 6 weeks I finally noticed some relief and it lasted for 6 months. Last year I finally gave in to the knife and sawsall and had both knees replaced. My knees no longer bother me but there are still some limitations as to what I can do. The fun times are just beginning when you turn 60! Bad knees sure limits a persons mobility.
I suffered with mine till I was 64, sure wish I had done the replacemants earlier.

All the best...
_________________________
She sits on the dock a fishin' in the water uh, huh
I don't know her name she's the fisherman's daughter uh, huh
Come on down to my boat baby
Come on down where we can play
Come on down to my boat baby
Come on down we'll sail away.