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Carpel Tunnel Syndrome

Definition
Carpal tunnel syndrome occurs when tendons or ligaments in the wrist become enlarged, often from inflammation, after being aggravated. 

The narrowed tunnel of bones and ligaments in the wrist pinches the nerves that reach the fingers and the muscles at the base of the thumb. The first symptoms usually appear at night. 

Symptoms range from a burning, tingling numbness in the fingers, especially the thumb and the index and middle fingers, to difficulty gripping or making a fist, to dropping things. 

Some cases of carpal tunnel syndrome are due to work-related cumulative trauma of the wrist. Diseases or conditions that predispose to the development of carpal tunnel syndrome include pregnancy, diabetes, and obesity. 

Treatment
Carpal tunnel syndrome is treated by immobilizing the wrist in a splint to minimize or prevent pressure on the nerves. If that fails, patients are sometimes given anti-inflammatory drugs or injections of cortisone in the wrist to reduce the swelling. 

There is also a surgical procedure in which doctors can open the wrist and cut the ligament at the bottom of the wrist to relieve the pressure. However, only a small percentage of patients require surgery.

Prognosis
Approximately 1 percent of individuals with carpal tunnel syndrome develop permanent injury. The majority recover completely and can avoid reinjury by changing the way they do repetitive movements, the frequency with which they do the movements, and the amount of time they rest between periods when they perform the movements.

Research
Much of the on-going research on carpal tunnel syndrome is aimed at prevention and rehabilitation. The National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) funds research on carpal tunnel syndrome.

National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
National Institutes of Health
Bldg. 31, Rm. 4C05
Bethesda, MD 20892-2350
NIAMSInfo@mail.nih.gov
http://www.nih.gov/niams
Tel: 301-496-8188 877-22-NIAMS (226-4267)

 

 

 

 

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