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                 Carpal Tunnel Syndrome


The pain, numbness or tingling caused by carpal tunnel syndrome occurs when the median nerve, which runs from the forearm into the hand, becomes pressed or squeezed at the wrist. The median nerve controls sensations to the palm side of the thumb and fingers except the little finger. The carpal tunnel - a narrow passageway between a broad ligament and the carpal bones of the wrist that surrounds the median nerve and tendons. Frequently, the bones of the wrist move out of place narrowing the tunnel and compress the median nerve. Sometimes, thickening from irritated tendons or other swelling narrows the tunnel and causes the median nerve to be compressed. The result may be pain, weakness, or numbness in the hand and wrist, radiating up the arm. Although painful sensations may indicate other conditions, carpal tunnel syndrome is the most common and widely known of the entrapment neuropathies in which the body's peripheral nerves are compressed or traumatized.

 

What are the symptoms of carpal tunnel syndrome?
 

Symptoms usually start gradually, with frequent burning, tingling, or itching numbness in the palm of the hand and the fingers, especially the thumb and the index and middle fingers. Some carpal tunnel sufferers say their fingers feel useless and swollen, even though little or no swelling is apparent. The symptoms often first appear in one or both hands during the night, since many people sleep with flexed wrists. A person with carpal tunnel syndrome may wake up feeling the need to "shake out" the hand or wrist. As symptoms worsen, people might feel tingling during the day. Decreased grip strength may make it difficult to form a fist, grasp small objects, or perform other manual tasks. In chronic and/or untreated cases, the muscles at the base of the thumb may waste away. Some people are unable to tell between hot and cold by touch.

 

What are the causes of carpal tunnel syndrome?

Carpal tunnel syndrome is often the result of pressure on the median nerve and tendons in the carpal tunnel. Contributing factors include trauma or injury to the wrist that cause swelling, such as sprain or fracture; mechanical problems in the wrist joint; work stress; repeated use of vibrating hand tools; fluid retention during pregnancy or menopause; or the development of a cyst or tumor in the canal. In some cases no cause can be identified.

Other factors that can contribute to carpal tunnel are nerve irritation or pressure in the neck or cervical spine, shoulder or elbow. All of these areas need to be examined to rule out the possible involvement.

Who is at risk of developing carpal tunnel syndrome?

Women are three times more likely than men to develop carpal tunnel syndrome, perhaps because the carpal tunnel itself may be smaller in women than in men. The dominant hand is usually affected first and produces the most severe pain. Persons with diabetes or other metabolic disorders that directly affect the body's nerves and make them more susceptible to compression are also at high risk. Carpal tunnel syndrome usually occurs only in adults.

The risk of developing carpal tunnel syndrome is not confined to people in a single industry or job, but is especially common in those performing assembly line work - manufacturing, sewing, finishing, cleaning, and meat, poultry, or fish packing. In fact, carpal tunnel syndrome is three times more common among assemblers than among data-entry personnel. A 2001 study by the Mayo Clinic found heavy computer use (up to 7 hours a day) did not increase a person's risk of developing carpal tunnel syndrome.

During 1998, an estimated three of every 10,000 workers lost time from work because of carpal tunnel syndrome. Half of these workers missed more than 10 days of work. The average lifetime cost of carpal tunnel syndrome, including medical bills and lost time from work, is estimated to be about $30,000 for each injured worker.

How is carpal tunnel syndrome diagnosed?

Early diagnosis and treatment are important to avoid permanent damage to the median nerve. A physical examination of the hands, arms, shoulders, and neck can help determine if the patient's complaints are related to daily activities or to an underlying disorder, and can rule out other painful conditions that mimic carpal tunnel syndrome. The wrist is examined for tenderness, swelling, warmth, and discoloration. Each finger should be tested for sensation, and the muscles at the base of the hand should be examined for strength and signs of atrophy. Routine laboratory tests and X-rays can reveal diabetes, arthritis, and fractures.

Physicians can use specific tests to try to produce the symptoms of carpal tunnel syndrome. In the Tinel test, the doctor taps on or presses on the median nerve in the patient's wrist. The test is positive when tingling in the fingers or a resultant shock-like sensation occurs. The Phalen, or wrist-flexion, test involves having the patient hold his or her forearms upright by pointing the fingers down and pressing the backs of the hands together. The presence of carpal tunnel syndrome is suggested if one or more symptoms, such as tingling or increasing numbness, is felt in the fingers within 1 minute. Doctors may also ask patients to try to make a movement that brings on symptoms.

How is carpal tunnel syndrome treated?

Surgery has been commonly used to release the pressure on the nerve by cutting the broad ligament in the wrist allowing the carpal to spread reducing pressure on the nerve but if the problem is properly diagnosed and treated surgery can usually be avoided. Treatments for carpal tunnel syndrome should begin as early as possible, under a doctor's direction. Underlying causes such as diabetes or arthritis should be treated first. Treatment generally involves specialized physical therapy directed toward taking the pressure off the nerve at the wrist by maneuvers and exercise that can reduce the inflammation and pressure on the median nerve. Along with stretching the muscles and ligaments of the forearm and hand. Indications on whether physical methods are effective will generally take only 2-5 treatments although complete resolution can take longer.


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The Back Pain Institute of St Louis has helped THOUSANDS of people regain a healthy, active pain free lifestyle with the SpineTREXģ Program.  Read what happened to a patient in our office......     

David Keller

Thirty five years ago I fractured a vertebra and I compressed 3 disks in my low back from an old sports injury weight lifting.  As a result of that Iíve had troubles off and on since that time.  It seemed to have gotten worse.  In addition to excruciating back pain, I also experienced moderate pain and numbing in the right foot due to sciatica.

I was looking for a treatment that would hopefully fix the problem without a lot of expense as well as the dangers and complications of surgery - the type of thing that could produce long-term results.  One day in January, I stopped at a restaurant and I saw a copy of an article about back pain relief offered at the Back Pain Institute, and I decided to give the Back Pain Institute a call.

It appeared to me that they were addressing the problems and not just the symptoms, and this is what I was looking for so I did some further investigation.

I could feel and measure a difference right after my fourth treatment, I was feeling so much better that I walked two miles without any pain or symptoms whatsoever.  Prior to the treatments I could not have done that.  I felt tremendous.

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