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Information about Extensor Retinaculum Of The Hand

The mucous sheaths of the tendons on the back of the wrist. (Dorsal carpal ligament labeled at bottom center.)
Latinretinaculum musculorum extensorum manus
subject #126 458
Dorlands/Elsevier r_10/12706052
The extensor retinaculum (dorsal carpal 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 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.

It is attached, medially, to the styloid process of the ulna and to the triangular and pisiform bones; laterally, to the lateral margin of the radius; and, in its passage across the wrist, to the ridges on the dorsal surface of the radius.

Additional images


Transverse section across distal ends of radius and ulna.


External links

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General anatomy of upper limbs
Arm
Forearm
Hand
Anatomical snuff box  reticula of the hand (Extensor, Flexor)  Finger  Extensor expansion  Palmar aponeurosis
A tendon (or sinew) is a tough band of fibrous connective tissue that connects muscle to bone and is built to withstand tension. Tendons are similar to ligaments except that ligaments join one bone to another.
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wrist is the flexible and narrower connection between the forearm and the palm. The wrist is essentially a double row of small short bones, called carpals, intertwined to form a malleable hinge.
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Latin}}} 
Official status
Official language of: Vatican City
Used for official purposes, but not spoken in everyday speech
Regulated by: Opus Fundatum Latinitas
Roman Catholic Church
Language codes
ISO 639-1: la
ISO 639-2: lat
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Elsevier, the world's largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. Based in Amsterdam, the company has substantial operations in the UK, USA and elsewhere.
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The antebrachial fascia (or antibrachial fascia) continuous above with the brachial fascia, is a dense, membranous investment, which forms a general sheath for the muscles in this region; it is attached, behind, to the olecranon and dorsal border of the ulna, and gives off
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For the firearm component, see .
The forearm is the structure on the upper limb, between the elbow and the wrist.[1]. This term is used in anatomy to distinguish it from the arm (or upper arm).
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The palmar carpal ligament (also volar carpal ligament) is a term that is often used in anatomy to describe the thickened portion of antebrachial fascia on the anterior of the wrist. It is officially unnamed.
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wrist is the flexible and narrower connection between the forearm and the palm. The wrist is essentially a double row of small short bones, called carpals, intertwined to form a malleable hinge.
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In anatomy, a styloid process (from Greek stylos, "pillar"), usually serving as points of attachment for muscles, refers to the slender, pointed process (protrusion) of :
  • temporal bone of the skull - Styloid process (temporal)

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The ulna (elbow bone) is a long bone, prismatic in form, placed at the medial side of the forearm, parallel with the radius.

Articulations

The ulna articulates with:
  • the humerus, at the right side elbow as a hinge joint.

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A triangle is one of the basic shapes of geometry: a polygon with three corners or and three sides or edges which are straight line segments.

In Euclidean geometry any three non-collinear points determine a triangle and a unique plane, i.e.
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The pisiform bone (also called pisiform or lentiform bone) is a small knobbly, pea-shaped wrist bone.

The pisiform bone is found in the proximal row of the carpus. It is located where the ulna (inner bone of the forearm) joins the carpus (wrist).
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In classical geometry, a radius (plural: radii) of a circle or sphere is any line segment from its center to its perimeter. By extension, the radius of a circle or sphere is the length of any such segment. The radius is half the diameter.
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eMedicine is an online clinical medical knowledge base that was founded in 1996 by Scott Plantz and Richard Lavely, two medical doctors. It was sold to WebMD in January 2006.
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University of Kansas (often referred to as KU or just Kansas) is an institution of higher learning in Lawrence, Kansas. The main campus resides atop Mount Oread. The University was founded in 1865 by the citizens of Lawrence under a charter from the Kansas Legislature.
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Human anatomy is primarily the scientific study of the morphology of the adult human body.[1] It is subdivided into gross anatomy and microscopic anatomy.[1]
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In human anatomy, the upper limb (also upper extremity) refers to what in common English is known as the arm, that is, the region of the shoulder to the fingertips. It includes the entire limb, and thus, is not synonymous with the term upper arm.
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An arm is an upper limb of the body.

Arm (or arms) may also refer to:
  • Armaments, weapons; as in Small arms, Right to bear arms
  • Eta Capricorni, a star, traditional name "Arm"

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The clavipectoral triangle (or deltopectoral triangle) is an anatomical triangle bordered by the following structures:
  • pectoralis major
  • deltoid
  • clavicle
It contains the cephalic vein.
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The Quadrangular Space is a space in the shoulder through which the axillary nerve, the posterior humeral circumflex artery and accompanying veins pass. Four muscles define the posterior edges of the space; teres minor on top, the teres major on the bottom, the long head of the
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The triangular space contains the scapular circumflex vessels.[1]

It is bounded by the Teres minor superiorly, the Teres major inferiorly, and the long head of the Triceps laterally.
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The triangular interval is the space between the long head of the triceps brachii and the humerus, just inferior to the teres major.

The radial nerve and profunda brachii pass through the triangular interval.
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For the bowling style in cricket, see .


The underarm (or armpit, axilla, or oxter) is the area on the human body directly under the joint where the arm connects to the shoulder.
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axillary sheath—continuous above with the deep cervical fascia. A brachial plexus nerve block can be achieved by injecting anaesthetic into this area.

External links

  • SUNY Labs 05:01-0200
  • Description at upstate.

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The lower border of Pectoralis major forms the rounded anterior axillary fold.

See also

  • underarm

External links

  • anterior+axillary+fold at eMedicine Dictionary
  • Description at umich.

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Not to be confused with Fuchsia.


Fascia (făsh'ē-ə), pl. fas·ci·ae (făsh'ē-ē), adj. fascial (făsh'ē-əl) (from latin: a band) is the soft tissue component of the connective tissue system that
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axillary fascia.

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated.
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The Brachial Fascia (deep fascia of the arm) is continuous with that covering the Deltoideus and the Pectoralis major, by means of which it is attached, above, to the clavicle, acromion, and spine of the scapula; it forms a thin, loose, membranous sheath for the muscles of
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fascial compartments, and are formed by tough connective tissue septa. The (upper) arm is divided into two compartments by the lateral intermuscular septum and the medial intermuscular septum: anterior and posterior.
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The posterior compartment of the arm contains muscles which are all supplied by the radial nerve. This compartment is also known as the "extensor compartment", extension being its main action.

The muscles of this compartment are the triceps brachii and anconeus muscle.
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