One is so-called tunnel surgery. Its medical name is percutaneous nephrolithotomy. The surgeon makes a cut in the patient's back and tunnels into the kidney to remove the stone. The second uses a ureterscope to come in via the urethra to find the stone and pull it out. Up to 12 glasses a day is recommended.
Water helps the kidneys flush things out of the system.
Talk to your doctor. If you've had a stone or maybe a family history, your doctor may want to make some dietary suggestions. Consult a qualified healthcare professional who understands your particular history for individual concerns. You need Javascript to use the menu above, which your browser has apparently disabled. Please refer to the list of centers at the top left side of this page instead.