Hello again, bagobones:
I suffered with kidney stones for over a decade; these are directly related to increased AS activity and are the result of inflammation plus deep depletion of calcium from bones. After the Ca reserves are consumed (bone spiculae), the other components of bone are randomly assaulted to obtain calcium and a primary by-product of this is the oxylate radical.
Depletion of local calcium results in bone spurs; kidney stones do nothing to prevent these but are a sure sign that the AS is being mismanaged, and mis-treated: Once I found out how to properly treat my AS I went from approximately an average of 3 large stones annually to zero; I have not had a single stone in over 12 years. It must be more than just being out of calcium (I do have osteoporosis after so many years of mismanaged AS), for I sure take a lot of Ca and other supplements (including strontium, boron, copper, magnesium, and zinc).
Make Your meals of raw walnuts--and good to drink cranberry juice or watermelon seed tea--until the stones pass. You can have that information; I no longer need it! [KNOCK WOOD]
HEALTH,
John