It all depends on how severe the spondylitis os affecting your mother.
Also it depends a lot on the expertise of the anesthetist. A good experienced anesthetist should not have difficulty in giving anesthesia.
Next Steps
please consult the concerned anesthetist of the same hospital where you are getting her treated.
Health Tips
if you stay in Pune please visit our hospital Columbia Asia at Kharadi.
She will be taken care in the best possible way and I assure you of very fast recovery post the surgery