Could you describe how do you pass kidney stones?

Painfully. Kidney stones are more common in men, and have further to go along the longer male urethra. Not all kidney stones are passed, some remain, some need surgical treatment for removal or ultrasound treatment in help of breaking them down to smaller, more passable size. The kidney stones are passed by the fluid current along the ureter, and then by the bladder muscle's pressuring urinary stream.