What Is the Carpal Tunnel?

It is composed of flexor support band and carpal groove. There are superficial and deep flexor tendons and flexor tendon sheaths, long flexor tendons and their sheaths and median nerves passing through the tube. In the tube, the superficial and deep flexor tendons of each finger are wrapped by the common flexor tendon sheath (ulnar sac): the long flexor tendon is wrapped by the long flexor tendon sheath (radial sac). Both tendon sheaths exceeded the flexor support bands by 2.5 cm each on the proximal and distal sides. The common flexor tendon sheath is often in communication with the synovial membrane of the little finger. Since the hallucis longus tendon sheath continues to the end of the thumb, the hallucis longus tendon sheath is connected to the thumb synovial sheath. The median nerve becomes flattened in the carpal tunnel, close to the deep side of the radial end of the flexor support band. When the carpal fracture occurs, the median nerve can be compressed, leading to carpal tunnel syndrome.

It is composed of flexor support band and carpal groove. There are superficial and deep flexor tendons and flexor tendon sheaths, long flexor tendons and their sheaths and median nerves passing through the tube. In the tube, the superficial and deep flexor tendons of each finger are wrapped by the common flexor tendon sheath (ulnar sac): the long flexor tendon is wrapped by the long flexor tendon sheath (radial sac). Both tendon sheaths exceeded the flexor support bands by 2.5 cm each on the proximal and distal sides. The common flexor tendon sheath is often in communication with the synovial membrane of the little finger. Since the hallucis longus tendon sheath continues to the end of the thumb, the hallucis longus tendon sheath is connected to the thumb synovial sheath. The median nerve becomes flattened in the carpal tunnel, close to the deep side of the radial end of the flexor support band. When the carpal fracture occurs, the median nerve can be compressed, leading to carpal tunnel syndrome.
Chinese name
Carpal tunnel
Foreign name
carpal canal
Constitute
Flexor muscle support belt and carpal groove
Tube
Superficial and deep flexor tendons in the tube
Related
Carpal tunnel syndrome

Carpal tunnel carpal tunnel syndrome

There is an elbow canal behind the ulnar side of the elbow joint. The median nerve passes through the palm in the elbow canal. "Carpal tunnel syndrome" is a symptom caused by the nerve that leads from the arm to the finger, the median nerve. . After the median nerve is compressed, the three fingers "directed" by the median nerve, the thumb, index finger, and middle finger will first produce pain and numbness. The small muscles of the hand that are under its control have atrophied, so there are ape-shaped hands, the thumb cannot be on the palm, the thumb and the index finger are weak, and the fingers cannot be separated and closed.
Carpal tunnel syndrome is a very common civilized disease, which is mainly related to occupations that are mainly based on hand movements. With this disease, symptoms such as gradual numbness of the hands, burning pain, swelling of the wrist joints, inflexible hand movements, and weakness will occur. At night, the pain will worsen, and even the patient will wake up from a dream. The keyboard, especially the mouse, is our most common "carpal tunnel killer". With the increasing number of driving families, the steering wheel has also become a "carpal tunnel killer". Other occupations that frequently use both hands, such as musicians, teachers, editors and journalists, architectural designers, assemblers, etc., are likely to be the "poisonous hands" of carpal tunnel syndrome. Women are the biggest victims of carpal tunnel syndrome, their incidence rate is about three times that of men, and they are more likely to be 30-60 years old. The reason is that women's bones are smaller than men's. The carpal tunnel of the hand is inherently thinner than that of men, and the median nerve of the wrist is more vulnerable to compression damage. Especially pregnant women and patients with certain endocrine disorders, such as diabetes, thyroid dysfunction, rheumatism or rheumatoid arthritis, etc., due to the thickening of the tendon synovium, the carpal tunnel lumen becomes smaller, which is more likely to cause carpal tunnel syndrome. If you use the computer frequently, it will make things worse, making the mouse hand more powerful.

Measurement of carpal tunnel carpal tunnel pressure and its clinical significance

Carpal tunnel syndrome is caused by the compression of the median nerve in the carpal tunnel. Its clinical manifestations are numbness of the radial fingers, pain, or paralysis of the great fish muscles. The thumb is weak on the palm and affects the function of the hand. To explore the causes of carpal tunnel syndrome, measure the internal pressure of the carpal tunnel, and observe the anatomical characteristics of the transverse carpal ligament, which have important reference value for clinical treatment of carpal tunnel syndrome. According to the analysis of this group of data, the pressure inside the carpal tunnel above the transverse carpal ligament is significantly higher than the pressure below the transverse carpal ligament. After the transverse carpal ligament is cut, the pressure in the carpal tunnel cannot be measured using a similar internal pressure measuring device, which can explain that Ligament is one of the important structures to maintain the internal pressure of carpal tunnel. The thickness of the transverse carpal ligament is directly proportional to the internal pressure of the carpal tunnel. This set of data shows that the right transverse carpal ligament is generally thicker than the left transverse carpal ligament. It may be caused by the right-handed labor advantage over the left-handed. The measured carpal tunnel pressure (both above and below the ligament) is higher than that on the left, indicating that the thickness of the transverse carpal tunnel ligament is directly proportional to the carpal tunnel pressure. According to related literature reports, carpal tunnel syndrome is common in middle-aged and elderly women. This is because women's carpal tunnels are usually smaller than men's, and the median wrist nerves are susceptible to compression. However, there are more men than women in this measurement sample, and the number of samples is too small. The statistical analysis of carpal pressure in men and women has not yet been performed, and further research is needed.
The treatment of carpal tunnel syndrome should be determined according to the cause of carpal tunnel syndrome and the severity of clinical symptoms. For patients with mild clinical symptoms, the median nerve is slightly compressed, and conservative treatment methods such as comprehensive massage of Chinese medicine, manual release, and traditional Chinese medicine physiotherapy can be adopted. Patients with severe median nerve compression and severe clinical symptoms may undergo surgical treatment such as surgical carpal tunnel incision, median adventitia decompression, and transverse carpal ligament resection.

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