Вы можете отметить интересные вам фрагменты текста, которые будут доступны по уникальной ссылке в адресной строке браузера.

Extensor retinaculum of the hand

Extensor retinaculum of the hand
Extensor retinaculum of the hand
Gray424.png
The mucous sheaths of the tendons on the back of the wrist. (Dorsal carpal ligament labeled at bottom center.)
Latin retinaculum musculorum extensorum manus
Gray's subject #126 458

The extensor retinaculum (dorsal carpal ligament, or posterior annular ligament) is an anatomical term for the thickened part of the antebrachial fascia that holds the tendons of the extensor muscles in place. It is located on the back of the forearm, just proximal to the hand. It is continuous with the palmar carpal ligament, which is located on the anterior side of the forearm.

It is a strong, fibrous band, extending obliquely downward and medialward across the back of the wrist, and consisting of part of the deep fascia of the back of the forearm, strengthened by the addition of some transverse fibers.

The extensor retinaculum is attached laterally to the lateral margin of the radius. However, it is not attached to the ulna medially, as the distance between these two bones varies with supination and pronation of the forearm. Instead the medial attachment is to the most medial of the carpal bones, the triquetrum (or triquetral bone) and pisiformis (or pisiform bone). The retinaculum is also attached in its passage across the wrist, to the ridges on the dorsal surface of the radius.

[edit] Additional images

  • Transverse section across distal ends of radius and ulna.

[edit] External links

Stub icon This musculoskeletal system article is a stub. You can help Wikipedia by expanding it.
v · d · eList of muscles of upper limbs (TA A04.6, GA 4.432)
Shoulder
Arm
(compartments)
Axillary sheath · Axillary fascia · Brachial fascia · intermuscular septa (Lateral, Medial)
Other
Forearm
Other
Hand
Lateral volar
Medial volar
Intermediate
lumbrical · interossei (dorsal, palmar)

posterior: Extensor retinaculum · Extensor expansion

anterior: Flexor retinaculum · Palmar aponeurosis

M: MUS, DF+DRCT

anat (h/n, u, t/d, a/p, l)/phys/devp/hist

noco(m, s, c)/cong(d)/tumr, sysi/epon, injr

proc, drug (M1A/3)

Wikimedia Foundation. 2010.

  
Share  

Look at other dictionaries:

  • Flexor retinaculum of the hand — Infobox Anatomy Name = PAGENAME Latin = retinaculum musculorum flexorum manus, ligamentum carpi transversum GraySubject = 126 GrayPage = 456 Caption = The mucous sheaths of the tendons on the front of the wrist and digits. (Transverse carpal… …   Wikipedia

  • Flexor digiti minimi brevis (hand) — Infobox Muscle Name = Flexor digiti minimi brevis Latin = musculus flexor digiti minimi brevis manus GraySubject = 126 GrayPage = 464 Caption = The muscles of the left hand. Palmar surface Origin = hamate bone Insertion = little finger Blood =… …   Wikipedia

  • Fascia — Infobox Anatomy Name = Fascia Latin = fascia GraySubject = 104 GrayPage = Caption = The rectus sheath and the thoracolumbar fascia provide strong fascial support between the bottom of the ribcage and the top of the pelvis. Caption2 = Fascia… …   Wikipedia

  • Palmar carpal ligament — Infobox Ligament Name = PAGENAME Latin = ligamentum carpi volare GraySubject = 126 GrayPage = 456 | Caption = MeshName = MeshNumber = The palmar carpal ligament (also volar carpal ligament) is a term that is often used in anatomy to describe the… …   Wikipedia

  • Flexor pollicis brevis muscle — Muscle infobox Name = Flexor pollicis brevis muscle Latin = musculus flexor pollicis brevis GraySubject = 126 GrayPage = 461 Caption = The muscles of the left hand. Palmar surface. (Flexor pollicis brevis visible at center right, near thumb.)… …   Wikipedia

  • Flexor carpi radialis muscle — Infobox Muscle Name = PAGENAME Latin = musculus flexor carpi radialis GraySubject = 125 GrayPage = 446 Caption = Front of the left forearm. Superficial muscles. (Flexor carpi radialis and its tendon visible in blue.) Caption2 = Front of right… …   Wikipedia

  • Flexor pollicis longus muscle — Muscle infobox Name = Flexor pollicis longus muscle Latin = musculus flexor pollicis longus GraySubject = 125 GrayPage = 449 Caption = Front of the left forearm. Deep muscles. (Flexor pollicis longus is shown in blue) Caption2 = Origin = The… …   Wikipedia

  • Abductor pollicis brevis muscle — Muscle infobox Name = Abductor pollicis brevis muscle Latin = musculus abductor pollicis brevis GraySubject = 126 GrayPage = 461 Caption = Abductor pollicis brevis visible at center right. Origin = Transverse carpal ligament, the scaphoid and… …   Wikipedia