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The
Death of Various Theories of How to Improve or Effectively
Change Spinal Configuration to Improve Health
page 2
You can therefore see that if a vertebra displaces anterior
----- there are no muscles that pull posterior to reposition
it.
The muscles of the back are oriented vertically and
horizontally. They pull inferior-superior, left-right and on
all sorts of angles between those two;
BUT they do not pull posterior. To pull posterior there
would have to be a muscle that attaches from the vertebra to
something stable behind the vertebra. (Just skin back there
for me.)
Many would object to that observation, stating the erector
spinae, longisimus, multifidus and other muscles pull
posterior but they are not looking at the orientations of
those muscles and their directions of pull.
 People
who do not exactly observe the orientations and directions of
pull of the muscles are misled by what the back muscles seem
to do. Those muscles pull down on the back of the vertebrae
rotating them into extension. This tilts the body posterior
and seems to bring the vertebrae posterior, but it does
not. (see diagrams below)
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