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Anatomy and
Ergonomic Interactions
With the Human Body

The
Back
The human back is a complex and
important component of our anatomy. Besides serving as the major
structural framework for the body and providing us with the ability
to walk, it is also an integral point of attachment for ligaments
and muscles, and a conduit for nerve impulses.
The backbone is actually
composed of interlocking rings of bone called vertebrae that
give the back both its strength and flexibility. The vertebrae
are organized into 4 major groups that affect different parts
of the body. The vertebrae serve as points of attachment for
muscles and
tendons, and the hollow center is filled with the spinal cord.
The vertebrae are separated by
small rings of spongy material called discs that provide cushioning
between each flexible vertebrae. Severe impact injuries can crush
the discs between vertebrae, thereby pinching nerves that run
to and from the spinal cord, and also affect the ability of adjacent
vertebrae to pivot when bending or twisting.
Most back problems associated
with computer workstations are identical to those caused by any
activity requiring extended sitting soreness or stiffness,
often in the lower regions of the back.
Avoid back problems by
adopting the following work recommendations:
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Place monitor in direct
straight line with keyboard and chair to avoid continually twisting
and bending.
Good sitting posture will virtually
eliminate the possibility of back problems. Achieve good posture
by sitting erect in your chair, planting your feet firmly on
the floor (or a foot stool if the chair cannot be lowered for
any reason), and keeping your lower back firmly supported by
the lumbar support of your chair.
Whenever working at the computer
for long periods, take breaks to change the focus of the eyes.
Take periodic breaks and
get up from your chair to change your position and perform
stretching exercises. |
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