XR was pristine...he said that I need to keep riding...but not on a SS. "Use your gears." Your patella puts 5x the pressure against the groove at the trochlea...so I'm 200lbs = 1000lbs of pressure there.
Normally, he recommends his patients exercise b/c they have weak quads causing this sort of pain. My case, he said was different. Def no damage...def keep on the bike.