carpal tunnel syndrome: see repetitive stress injury repetitive stress injury or repetitive strain injury (RSI), injury caused by repeated movement of a particular part of the body. Often seen in workers whose physical routine is unvaried, RSI has become epidemic since computers have entered the
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Short, Repetitive Movement
Carpal tunnel syndrome is caused by short, repetitive movement, such as typing, knitting, and using vibrating tools for hours on end. The lack of rest in between these motions irritates and inflames the flexor tendons that travel with the median nerve to the hand through an area in the wrist called the "carpal tunnel," which is surrounded by bones and a transverse ligament. The inflamed tendons squeeze the nerve against the ligament.
The Treatments
The prescription for typists may be as simple as wrist exercises and the use of a wrist rest or ergonomic glove. The more severe remedy is surgery, in which the transverse ligament is cut to relieve pressure. See RSI and medical conditions.
carpal tunnel syndrome [¦kär·pəl ¦tən·əl ′sin‚drōm]
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carpal tunnel syndrome (CTS)
Painful condition caused by repetitive stress to the wrist over time. The median nerve and the tendons that bend the fingers pass through the carpal tunnel on the inner side of the wrist, between the wrist (carpal) bones on three sides and a ligament on the fourth. Repetitive finger and wrist movements rub the tendons against the walls of the carpal tunnel and may make the tendons swell, squeezing the nerve. Numbness, tingling, and pain in the wrist and hand may progress to loss of muscle control. CTS is most common in assembly-line workers and computer keyboard users. Treatment may include avoidance of the causative activity, ergonomic workplace design, anti-inflammatory drugs, brace or splint use, and surgery.
carpal tunnel syndrome
A disorder that causes numbness in the hand and pain in the wrist due to the compression of the median nerve, which runs down the arm to the fingers. The pain can extend all the way to the neck and be extremely severe. People may have a genetic predisposition to this malady and those who suffer with thyroid problems, diabetes and rheumatoid arthritis are believed to be more susceptible.Short, Repetitive Movement
Carpal tunnel syndrome is caused by short, repetitive movement, such as typing, knitting, and using vibrating tools for hours on end. The lack of rest in between these motions irritates and inflames the flexor tendons that travel with the median nerve to the hand through an area in the wrist called the "carpal tunnel," which is surrounded by bones and a transverse ligament. The inflamed tendons squeeze the nerve against the ligament.
The Treatments
The prescription for typists may be as simple as wrist exercises and the use of a wrist rest or ergonomic glove. The more severe remedy is surgery, in which the transverse ligament is cut to relieve pressure. See RSI and medical conditions.
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| The Median Nerve |
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| There is so little space in the carpal tunnel that when the tendons get inflamed, the median nerve is pressed against the transverse ligament. (Image courtesy of www.carpal-tunnel.com.) |
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| Rest the Wrist |
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| Wrist rests help to avoid carpal tunnel syndrome by keeping the wrists elevated above the keyboard. |
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| An Ergonomic Glove |
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| IMAK Products' Smart Glove uses a removable splint (upper cutout) to keep the wrist in the proper position. The ergoBeads (bottom cutout) massage the area to increase blood circulation and promote healthy muscle tissue. (Image courtesy of IMAK Products Corporation, www.imakproducts.com) |
carpal tunnel syndrome [¦kär·pəl ¦tən·əl ′sin‚drōm]
(medicine)
A condition caused by compression of the median nerve in the passage between the wrist and carpal bones; characterized by nocturnal pain, numbness, and tingling in the hand.
| carpal tunnel syndrome - overuse strain injury |
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