Physical Reality
Spinal
Antomy
In order to comprehend the concepts presented in this
book it is essential to acquire a clear understanding of
the vertebral column's basic anatomy.
Directional
Terminology
The following terms are frequently used in medical
terminology to describe anatomical directions.
They can be used to describe the entire body or any of its
parts. One should have a familiarity with them in order
to fully understand the concepts, positions, and movements
described throughout the book:
Structural Anatomy
The spinal column has classically been
divided into several structurally and functionally distinct
sections, the cervical spine, the thoracic
spine, the lumbar spine and the
sacral spine. Largely, this book deals
with the cervical, thoracic, and lumbar sections since the
sacral section is functionally fused and offers little opportunity
for mechanical manipulation except where it interfaces with
the lumbar spine at L-5, which is probably the most problematic
area in the spine because it is the first mobile segment
above the rigid pelvis.
Functional
Anatomy
The nucleus pulposus in combination with the
annulus fibrosus affords shock absorbency function to
the disc and allows the functional disc unit its dynamic
flexibility.
Pathological
Anatomy
These discs, being unique
structures, break in a unique, pressure-induced, manner
by herniating.
Disc
Hydraulics / Mechanics
Since the majority of back pain
emanates from problems related to the intervertebral
disc, a discussion that is centered around the
inter-relationships of anatomy, physiology, and mechanics
is most pertinent.
Disc
Herniation Pathology
As these forces act upon the posterior elements
of the fibro-cartilaginous laminations, the individual fibers
are caused to deform and bow posteriorly outward.
Compression
Forces
It is important to fully understand the compressive forces
acting upon the disc. Here, visualize, again, the two vertebral
bodies separated by a balloon filled with water to reproduce
the disc unit, illustrating the hydraulic and mechanical
forces.
Correlation
of Mechanical Anatomy with Disc Pain
Pain is an extremely interesting phenomenon, it can protect
and teach while at the same time can intimidate and destroy
nearly all enjoyment of life. Another means of differentiating
whether the source of pain originates in a disc or from
some other source is that TRACTION can transiently relieve
disc pain
Traction
Forces
Another means of differentiating whether the source of pain
originates in a disc or from some other source is that TRACTION
can transiently relieve disc pain.
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