I know at least two people who have been to chiropractors. Their problems got fixed in just one session, which was about an hour and a half. Now, I don't have an idea if there are cases requiring more than one sessions. In your case, it should be done in one.I found this bump on my neck. It is very hard and the doctor says my neck vertebra is very twisted. She is sending me to a chiropractor. How long do you think it will take to get it moved back to the correct position?