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Compression
of a spinal nerve root in the neck causes severe pain radiating
into the arm. Pain also occurs in the neck and shoulder blade.
There may be associated sensation of numbness, perhaps even
weakness in the arm and hand. The cause of the compression is
often a bulging or herniation of intervertebral disc material
which migrates into the spinal canal, compressing the nerve
root. An over growth of adjacent bone, osteophytes, are also a common cause of nerve root compression. On rare occasions the
spinal cord may be compressed causing instability in walking,
weakness and numbness in the arms and legs.
Surgical
treatment for cervical nerve root pain is quite successful.
Decompression of the nerve is performed either through an
approach from the back of the neck or through a small incision
in the front of the neck. Although both surgical approaches are
equally effective, the anterior approach is much less painful.
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Technique
of anterior cervical discetomy and fusion. . . .
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The
C4-5 disc space is exposed through an incision in front of the
neck. |
Through
the microscope the disc is removed along with bone spurs which
may cause symptoms. |
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Banked
bone is impacted into the disc space as a bone graft. |
The
vertebrae are fixed using a titanium plate and screws to prevent
movement during the fusion process. |
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A
side view x-ray showing the bone graft between the fourth and
fifth neck vertebrae. The arrow points to the titanium plate. |
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A
small incision in the front of the neck is made under general
anesthesia, and through an operative microscope the offending
central disc material is removed, including any bone spurs
compressing the nerve root or spinal cord. A small bone graft is
placed into the empty disc space. The graft obtained from the patient’s
pelvic rim
or, more usually, from a bone bank. Modern, processed banked bone is safe and
avoids the pain of an additional incision. Usually a small titanium plate is used to fix the graft
in position. The procedure takes
about one hour. Many individuals may go home the next day. There
is no appreciable blood loss and no cervical brace need be used.
Probably 85% to 95% of selected patients will be relieved of neck and arm
pain. Individuals will return to every day activities quickly. |