If you are a woman between the ages of 40 and 60 and often experience a tingling sensation in one or both hands, then you may have contracted a carpal tunnel syndrome - a common condition of the wrist. But the carpal tunnel syndrome also occurs in women of other ages and in men.
What is the carpal tunnel?
The carpal tunnel is a bony groove and is formed by the carpal bones (carpus, Latin for "carpal"). It lies on the inside of the forearm - from the outside, the area in question can be recognized by many small folds just below the hand. Through the carpal tunnel run many tendons that lead as an extension of the forearm muscles to the individual fingers and are responsible for the diffraction.
In addition to the tendons of the finger flexors, a nerve, the median nerve, runs through the carpal tunnel. His nerve fibers are responsible for the short finger flexors, the strong fist and the feeling in the palm to the area of the little finger. Thus, if his fibers are injured, the vigorous flexion of the thumb, index and middle finger is just as limited as the ability to make a fist. The carpal tunnel has a roof of tight connective tissue - this band (flexor retinaculum) serves as a lever and hold for the tendons, so they can not escape from the gutter.
How is a carpal tunnel syndrome created?
A carpal tunnel syndrome occurs when the space available to the tendons and the nerve is narrowed. Possible causes are:
- bone fractures
As a result of these causes, the carpal tunnel syndrome causes a thickening of the tendons in their respective area.
Increased manual work can lead to carpal tunnel syndrome as well as prolonged walking on forearm crutches, for example after meniscal surgery. Interestingly, it often occurs in diabetes mellitus, after pregnancy, during menopause, or in hypothyroidism - ie in a hormonal change or a hormonal imbalance.
How is a carpal tunnel syndrome expressed?
Typically, you often notice after sleeping a tingling sensation of thumb, index and / or middle finger on the affected hand, you often wake up with a fallen hand on. Especially on the thumb, depending on the movement, pain occurs that can feel like small electric shocks. The pain can also extend to the forearm.
If you do not do anything against the carpal tunnel syndrome, there will be a visible atrophy of the thumb bark after some time. A strong fist is no longer possible, a bottle can not be enclosed, even bread cutting is difficult.
The carpal tunnel syndrome is twice as common in women as in men and usually occurs between the 40th and 60th year of life. Often, only one hand is affected, shortly thereafter usually the other.