I’m just back from Vancouver having done a 3 day course on Myofascial Release for the Pelvis. From a structural/ biomechanical standpoint, the pelvis is the center of the universe, being the transition between the weightbearing legs/hips and the spine/ torso.
What the course reaffirmed for me is that the skeletal system swims in a pool of connective tissue and the skeletal system relies on the healthy state of the connective tissue to move in the manner to which it is designed to. The pelvis is an extraordinarily strong structure but is the fascia that surrounds it pulls it out of position, then it can be the surrounding, weaker systems that can be affected, such as the spine or the hip or knee and even ankle.
Imagine if the pelvis is pulled forward and to the left. Obviously we are not going to have our entire body leaned forward and to the left. So what does the torso do to pull us upright? It’s these compensations at the weaker structures, like the spine, that produce the symptoms. It really all is about cause and effect. Often the cause doesn’t produce symptoms but the effect does. In this case, pelvis is the cause (pulled forward and left by the fascia (connective tissue)) and the spine is the effect as it pulls in the opposite direction to pull us back level and the pain is produced around the spine.
The properties of this connective tissue is savable for another post.