Hey Wendy,
Very glad to hear that your shoulders have improved - they are fairly useful joints!
I think this is true of AS as well, that a certain degree of calcification can reverse if the inflammation is brought down and back under control for a long spell... there is some ability for tendons and ligaments to heal (but not bone fusion unfortunately), if it isn't past the point of no return. An increase in range of motion (ROM) is a good tell tale that things have really improved.
Really positive to hear that your meds seem to have steadied the course and quieted things for you. It sounds like you are tolerating them well too, thankfully!
Hugs!
mig
