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HERNIATED DISK
OVERVIEW: The spinal column is composed of a series of 24 bones
called vertebrae that are separated from each other by a disk. The disks are about the
size of four silver dollars stacked on one another. Their structure is like a jelly
doughnut with tough surrounding ligaments and a jelly center called a nucleus. This
nucleus will flatten out the bulge depending on the stress applied to the back. If the
force is too much, the nucleus can rupture and break through the surrounding ligament.
When this happens, it will pinch a nerve either in the low back or neck.
DIAGNOSIS: A ruptured disk does not always produce low back
pain, but instead, can cause pain that follows a nerve down the arm or leg into the hand
or foot, respectively. It can be associated with tingling, numbness or weakness in the
extremity. The onset may have been associated with excessive physical activity or a
traumatic incident such as a car accident. When the doctor examines the patient, he or she
will look for signs of nerve involvement through a careful neurologic exam checking
sensation, strength and reflexes. To confirm the presence of a ruptured disk, the doctor
may order a CT scan, MRI or possibly a myelogram. These tests provide very sophisticated
ways of viewing the spinal column that are far superior to traditional x-rays.
TREATMENT: Depending on the pain and potential for nerve
damage, there are a number of ways of treating a herniated disk. In some patients, the
nerves can be severely injured causing loss of bowel or bladder function. In this case, it
is an emergency and the disk must be surgically removed. Fortunately, in most patients,
this rarely occurs. Patients usually present with pain and minimal loss of nerve function.
They can elect to be treated conservatively with a combination of physical therapy,
medications, and injections. Physical therapy is useful in reducing a bulging disk and
taking pressure off of the nerve. If physical therapy and medications are inadequate for
control of pain, injections can be given to ease the discomfort. Epidural steroid
injections apply powerful anti-inflammatory drugs to the involved nerve root, which eases
pain and swelling secondary to disk irritation. The injections can be given as a series of
three over a period of several weeks. Relief can begin within 72 hours of the first
injection. Patients experiencing severe pain despite medications, physical therapy and
injections may find it necessary to have surgery.
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