Lagster, I have to tell you that I deal with SI with low back issues with every golfer. If they haven't developed sciatic nerve symptoms before they create a balance between the cervical and sacral regions of the vertebrae it is unavoidable. It has been completely reversable or managed without surgery with 100% percentage of my clients that have not already had surgery and do not have some other malformation of scar tissue or herniation that has created adhearance or fusion of the vertebrae. I sent a guy to an orthoped a few weeks ago and now he's on the natural path to stop the degeneration. I encourage everyone to re-visit the earlier thread and look at the information shared by physioguy. He is very poetic in verifying tha fact that most people, even non golfers, carry their body in a manner that promotes these hip and back problems. They just don't expose their pain and disfunction because they aren't passionate in their ability to use their hips.