Flexor retinaculum of the hand

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The flexor retinaculum ( transverse carpal ligament , or antherular anterior ligamentum) is a fibrous tape on the palm side of the hand near the wrist. It curved over the carpal bones from the hands, covering them and forming a carpal tunnel.

Video Flexor retinaculum of the hand

Structure

The flexor retinaculum is a strong fibrous band covering the carpal bones on the palmar side of the hand near the wrist. It attaches to the bone near the fingers and ulna. On the ulnar side, flexor retinaculum attaches to the bone of pisiform and hamate bone hook. On the radial side, it attaches to the scaphoid bone tubercle, and to the medial portion of the palmar surface and the trapezium bone ridge.

The flexor retinaculum continues with the palmar carpal ligament, and deeper with palmar aponeurosis. The ulnar nerve and the ulnar nerve, and the median and ulnar nerve branches, pass over the flexor retinaculum. On the radial side of the retinaculum is the flexor tendon carpi radialis, which lies in the curve of a larger multimeter between the ligaments of the ligaments to the bone.

The palmaris longus and flexor carpi ulnar tendons are partially attached to the surface of the retinaculum; Below, the short muscles of the thumb and little finger come from the flexor retinaculum.

Maps Flexor retinaculum of the hand

Function

The flexor retinaculum is the roof of the carpal tunnel, where the median nerve and muscle tendons flex the hand operand.

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Clinical interests

In carpal tunnel syndrome, one of the tendons or tissues in the carpal tunnel is inflamed, swollen, or fibrotic and puts pressure on other structures in the tunnel, including the median nerve. Carpal tunnel syndrome is the most commonly reported nerve trap syndrome. Carpal tunnel syndrome is often associated with repeated movements of the wrist and fingers; jobs like typists, pianists, and meat cutters are at extreme risk. The hard flexor retinaculum along with the rest of the carpal tunnel can not expand, putting pressure on the median nerve that flows through the carpal tunnel with the flexor tendon of the wrist. It produces symptoms of carpal tunnel syndrome.

Symptoms of carpal tunnel syndrome include tingling sensation and muscle weakness in the palms and the medial sides of the hands and palms. It is possible that this syndrome can expand and radiate nerves that cause pain in the arms and shoulders.

Carpal tunnel syndrome can be treated surgically; although this is usually done after all non-surgical treatment methods have been exhausted. Non-surgical treatment methods include aspirin and other anti-inflammatory drugs. In addition, the wrist may also be immobilized to prevent further use and inflammation. When surgery is required, the flexor retinaculum is completely disconnected or elongated. When surgery is performed to divide the flexor retinaculum, as far as the more general procedure, scar tissue will eventually fill the gap left by the surgery. The goal is that this will extend the flexor retinaculum sufficiently to accommodate inflamed or damaged tendons and reduce the compression effect on the median nerve. In a double blind study of 2004, the researchers concluded that there is no noticeable benefit from extending the flexor retinaculum during surgery and so ligament distribution remains the preferred method of surgery.

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See also

• Peroneal retinacula
• dorsal carpal ligament
• Extensor retinaculum from hand

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References

This article combines text in the public domain of page 456 of the 20th edition of Gray's Anatomy (1918)

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External links

• Anatomist: 08: 04-08 in Human Anatomy Online, SUNY Downstate Medical Center
• Hand kinesiology at the University of Kansas Medical Center
• lesson5flexretinac & amp; palmapon at The Anatomy Lesson by Wesley Norman (Georgetown University)

Source of the article : Wikipedia