Hi omb, just caught up with your progress and I'm so sorry to hear you are still having problems. I know how disappointing it is to go through the pain and stress of it all and still being no better. Having said that though it means you are one step closer to being cured.
It sounds like advancement flap surgery is going to be your next surgery, or maybe a conservative lis. Either way I'm sure Dr Windsor will choose the right option and you couldn't have a better surgeon in terms of skill.
In terms of your tailbone pain, I had this for about A year. I bought special cushions, I saw a physio, I changed the way I sat and I got really down about it as I felt that it was so unfair I had this as well as a fissure.
I read alot about it though and realised that so many people have tailbone pain, but no doctors could explain why. I then began to read about a doctor called john Sarno and read his book. It's a theory that is quite widely accepted now that alot of pain people experience, pain that can't be accurately diagnosed or explained is actually caused by the brain. The theory is that when you are going through tough times, or maybe if you just have certain issues eg anxiety or you are just stressed, the body creates pain as a distraction. I don't know if I believe that is really what the bodies doing but I do believe the mind can create pain. So after a accepted while I accepted that there was nothing physically wrong with my tailbone, and that I had gone through all my life of sitting, slouching, lying down without it hurting, for it to suddenly hurt would make no sense. It then got better in a few weeks and now doesn't hurt at all. And when it did hurt, it was agony just to touch. Google tms tailbone pain and have a read. There are people who have also got over it through applying the techniques. But the jist of it all really is just to say to your self. There is nothing physically wrong with my tailbone, it is being created by my mind to distract from stress or worry.
Just yesterday I was driving in the m1 and I'm quite an inexperienced driver and it was really busy so I was a bit stressed. My tailbone started hurting just like it used to and for a while it was really bothering me and I was thinking to myself, am I sitting awkwardly, have I hurt it again. Then I thought to my self, no, it's the same as last time, it's cause u are stressed, ignore it. 5 mins later the pain went.
Anyway I feel I might be rambling now! I no it sounds weird and I am in no way trying to dismiss your pain, I would have been the first to rubbish a theory like this in the past, but after a while I became desperate and the more I read the more things rang true. And in the end I feel it directly cured my tailbone pain, and also knee pain.
In terms of your fissure though, keep your head up. You will get it healed. My only advice is to try your best dry hardest not to let it dictate your life. Easier said than done I know. Good luck omb :)