Science, d. general discussion. This would explain upC correction of some cases of scoliosis. Trennoche, You correctly interpreted the gist of my comments. Say the C2-C4 articulations are fixed in the neutral position. However, without stress views, this will not be found.
Neutral views shows everything is fine.
Isn't it nice to both be semiretired and toss ideas about without anger. Of course I am in agreement with you about normalizung function. If you find verts that are fixed that is because they lack the IAR and are therefore not positionally correct. I don't have sufficient knowledge to say a total yey or nay. That is, if a vertebral motion unit is fixed in the neutral position, abnormal dynamics will express at the next freely moveable units in the kinematic chain.