I do have a disk problem way down, but it is really not the problem, as I have a pretty good control of my structure. I did have a few processes broken off when young in the middle back. These have long since dissolved but due to the physical change in structure, muscle and nerves I expect are "laying" differently than what would be natural. This could be a factor, one I had not thought of before today.
I know that this disk problem is part of the reason I maintain a more "upright" stance than some in the YCF lineage. This "problem can affect the muscles attaching to the upper rear pelvis, but has had no affect on the upper mid back...or rather, "rarely" see below.
I have a student who has found the same area in his back. I slowed his set down more so he could pay better attention to structure, spine, hips and hip joints. He as quite surpised by the change this made in his problem. He saw that his hip joints were tightening up, affecting his hips, his lower, and middle spine. I keep looking for this "flaw" in my own practice. But whenit occurs I look immediately to areas, and have found only rarely that this type of tension was present.
But hey, we are all different, and the "form" has to adjust to us to a large degree.
[This message has been edited by Michael (edited 10-15-2004).]