I don't know the right name for it but I just call it a crack. I have been cracking my moms back for years now. I know the risks involved and that I shouldn't and that only trained docters should do that stuff but I have done enough to know what I am doing. We don't have the money for anything that could help and without me she would be in pain most of the time. My question is about the lower back. Now the kidnys are down there so there is no joking around because they get hurt easly. To get the lower cracks out I pull the skin upward. My mom has had a lot of surgery(thats partly why her back is so bad) so the skin is very loose around there. If you pull just right they will come out but sometimes I can't get them out. So I was wondering if there is something different I can do if I can't get it out. If it is to hard I would rather not try because I don't want to hurt her.