Preventing Carpal Tunnel Syndrome

Carpal tunnel syndrome (CTS) is a chronic condition of pain, tingling and numbness in the wrist, palm or fingers of one hand. Movement and sensation of the thumb as well as sensation of the index, middle and ring fingers all depend on the median nerve. Pressure on or direct damage to the median nerve leads to CTS symptoms.

How big a problem is CTS?

CTS is a very common problem affecting many types of workers in different settings, both in the service industry and manufacturing.

Why is the wrist at risk?

The carpal tunnel is a narrow passageway between the metacarpals (wrist bones) and the transverse carpal ligament from the wrist to the hand. The median nerve shares this claustrophobic space with nine ligaments, leaving little room for swelling that might accompany injury. Repetitive motion injury that leads to CTS is usually the result of overuse, from bending the wrist repeatedly or keeping it flexed without rest. With repeated stress, the tissue that lines tendons (synovium) fills with fluid and swells in response to injury. Inflammation of soft tissue leaves even less room in this already tight "tunnel."

Wrist straining tasks

Working the cash register.

Working at a computer. Improper use of the mouse is more of a cause than typing.

Use of vibrating machinery, such as power tools.

Any recreation that involves repetitive bending of the wrist, such as knitting and table tennis, golfing and canoeing.

Conditions associated with CTS

Swelling and nerve damage can set up the conditions for CTS. People with the following conditions are more susceptible:

Diabetes

Hypothyroidism

Arthritis

Pregnancy

CTS Symptoms

1. Electrical tingling and numbness of fingers.

2. Hand pain, especially at night.

3. A weak grip and a tendency to drop things