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Components of the Spine
Vertebrae:
Bones of the spine that provide support and protection to the spinal
cord.
Facet joints: The points at which the bony extensions on
the backs of the vertebrae are connected. These joints provide a
mobile connection between the vertebrae and allow the spine to be
somewhat flexible. These joints can be affected by arthritis, causing
pain and stiffness.
Intervertebral disc: Large, round ligaments that connect
the vertebrae. The soft inner portion of the disc is called the
nucleus pulposus and acts as a shock absorber.
Nerve roots: The nerve roots carry information between the
extremities and the brain. If the nerve roots are pinched, pain
and numbness can result.
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Scoliosis
and spinal deformity:
Scoliosis is the term used to describe an abnormal
curvature of the spine from side to side. This condition
can occur in children or teenagers, often for no known
reason, or in older adults as the result of an injury
or a degenerative condition such as arthritis. Surgery
to correct scoliosis may be necessary, depending on
the degree of the curve and on whether there is risk
that the curve may worsen over time. Other types of
spinal deformity include those caused by tumors, by
fractures, or by congenital conditions in which a
vertebra does not fully form or in which the vertebrae
do not separate on one side.
Patient Education Resources:
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Lumbar
disc herniation:
Displacement of the disc material from between the
bones of the lower spine. This condition can cause
back pain and leg pain, numbness, and weakness. It
may also cause loss of control of bowels, bladder,
and legs.
Patient Education Resources:
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Cervical
disc herniation:
Displacement of the disc material from between the
bones of the neck. This condition can cause neck pain
and arm pain, numbness, and weakness. Depending on
the size and location of the herniation, it may cause
loss of control of bowels, bladder, and even the legs.
Patient Education Resources:
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Spinal
stenosis:
A condition in which there is not enough room in the
spinal bony canal for the spinal cord, the nerve roots,
or both. It can occur at a relatively young age in
certain people who are born with small spinal canals.
More often, it occurs in older people as the changes
associated with wear-and-tear arthritis gradually
decrease the size of the spinal canal. It causes back
and leg pain that is worse with activity.
Patient Education Resources:
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Tumors:
Abnormal enlargement and deterioration of the spine,
which can be related to a relatively nonaggressive
disease process localized in the spine, an aggressive
disease process starting in the spine, or the spread
of an aggressive disease (i.e., cancer) from other
parts of the body to the spine. Tumors can cause spine
pain from destruction of tissue and can also cause
pain and weakness in the arms or legs if the spinal
cord or the nerve roots are compressed.
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Fractures:
A fracture is a broken bone. Fractures in the spine
occur in young people usually as a result of a high-energy
accident (i.e., a fall from a height or a car wreck).
In older people, especially postmenopausal women,
fractures of the spine can result from low-energy
injuries or even when there is no known injury. If
the deformity around the fracture is large enough,
fractures can cause local spine pain and can cause
symptoms related to compression of the spinal cord
or the nerve roots.
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Spinal
instability:
Spinal instability results when the vertebrae do not
align properly. This instability may occur after an
injury or as the result of a congenital or degenerative
condition. In severe cases, one vertebra may slip
forward over the vertebra below it; this condition
is known as spondylolisthesis. Spinal instability
can cause compression of the spinal cord and the nerve
roots, resulting in pain and possible paralysis.
Patient Education Resources:
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Copyright
© 1998
The Kentucky Spine Institute - All Rights
kyspine@kyspine.net
Last
Updated:10/4/03
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