The tailbone right? I have injury from their when I gave birth to my son 6 years ago. He broke it and i didn't know so it healed pointed in way to much. I suffer alot from pain there and have steroid shots to help manage. When i talked to the specialist about the removal of it they told me it was a 50/50 chance it would work, high rate of infection, 2-3 month recovery and it would get way worse first before it got better. This just didn't seem worth to me, so I have opted to manage the pain with shots every 6months. It is some of the worst pain ever!!