Carpal tunnel

Infobox Anatomy
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Latin = canalis carpi
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Caption2 = Transverse section across the wrist and digits. (The median nerve is the yellow dot near the center. The carpal tunnel is not labeled, but the circular structure surrounding the median nerve is visible.)
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DorlandsPre = c_04
DorlandsSuf = 12208551
In the human wrist there is a sheath of tough connective tissue (the flexor retinaculum) which envelops and protects several structures. The carpal tunnel is the space between this sheath (above) and the bones (below) making up the wrist and hand (carpal bones).

Contents

* Tendons of the following muscles (not the muscles themselves):
** flexor digitorum profundus
** flexor digitorum superficialis
** flexor pollicis longus

Some sources also include the flexor carpi radialis,cite web |url=http://www.med.mun.ca/anatomyts/msk/wrist.htm |title=The wrist joint. |accessdate=2008-01-17 |format= |work=] although it is more precise to state that it travels in the flexor retinaculum which covers the carpal tunnel, rather than running in the tunnel itself.

* Nerves:
** Median nerve between tendons of Flexor digitorum profundus and Flexor digitorum superficialis

Clinical significance

The term 'carpal tunnel' is also used quite commonly to refer to 'carpal tunnel syndrome' which is a condition where the median nerve is compressed within the tunnel and causes pain and/or numbness of the wrist/hand, never proven to be the result of repetitive motion such as painting or typing. It has been shown to be associated with obesity, hypothyroidism, diabetes, pregnancy, family history, rheumatoid arthritis and wrist shape. It can be associated with certain fractures of the forearm and wrist. Work relatedness is less than is currently thought by the lay public and by non-hand surgeons. Even work that has high force and high repetitions is only partially related to the development of carpal tunnel syndrome. The carpal tunnel is important because the median nerve can be compressed in cases such as the following:
*Carpal tunnel syndrome
*Wrist dislocations
*Fractures around the wrist

ee also

* tarsal tunnel

References

External links

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Wikimedia Foundation. 2010.

Look at other dictionaries:

  • carpal tunnel — n a passage between the flexor retinaculum of the hand and the carpal bones that is sometimes a site of compression of the median nerve * * * the space between the carpal bones of the wrist and the connective tissue (retinaculum) over the flexor… …   Medical dictionary

  • carpal tunnel — noun A fibro osseous passageway on the palmar side of the wrist that connects the distal forearm to the middle compartment of the deep plane of the palm. Syn: carpal canal …   Wiktionary

  • carpal tunnel — the space between the carpal bones of the wrist and the connective tissue (retinaculum) over the flexor tendons. It contains the flexor tendons and the median nerve …   The new mediacal dictionary

  • carpal tunnel — noun a passageway in the wrist through which nerves and the flexor muscles of the hands pass • Hypernyms: ↑passage, ↑passageway • Part Holonyms: ↑wrist, ↑carpus, ↑wrist joint, ↑radiocarpal joint, ↑articulatio radiocarpea …   Useful english dictionary

  • carpal tunnel — n. passageway in the wrist through which the tendons of the flexor muscles of the hand and fingers pass …   English contemporary dictionary

  • carpal tunnel — /kapəl ˈtʌnəl/ (say kahpuhl tunuhl) noun the passage at the carpus for the median nerve and flexor tendons …   Australian English dictionary

  • Carpal tunnel syndrome — Classification and external resources Transverse section at the wrist. The median nerve is colored yellow. The carpal tunnel consists of the bones and flexor retinaculum. ICD 1 …   Wikipedia

  • carpal tunnel syndrome — n a condition caused by compression of the median nerve in the carpal tunnel and characterized esp. by weakness, pain, and disturbances of sensation in the hand and fingers abbr. CTS * * * an entrapment neuropathy characterized by pain and… …   Medical dictionary

  • carpal tunnel syndrome — UK US noun [C] (also carpal tunnel) ► HR a medical condition causing pain and weakness in the hand and arm, caused by repeated pressure on a nerve in the wrist: »An assembly line worker who has carpal tunnel syndrome may be able to do certain… …   Financial and business terms

  • Carpal Tunnel Syndrome — Album par Kid Koala Sortie Février 2000 Durée 37:50 Genre Hip hop/Turntablism Producteur Bullfrog Label …   Wikipédia en Français

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