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Extensor retinaculum of the hand
From Wikipedia, the free encyclopedia
| Extensor retinaculum of the hand | |
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| 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 |
| 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 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.
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.
 Transverse section across distal ends of radius and ulna. |
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| Arm |
Clavipectoral triangle • spaces (Quadrangular space, Triangular space, Triangular interval) • Axilla • Axillary sheath • Anterior axillary fold • compartment of arm (Posterior, Anterior) • intermuscular septa (Lateral, Medial) • fascia (Axillary, Brachial) |
| Forearm |
Cubital fossa (Bicipital aponeurosis) • common tendons (Extensor, Flexor) • Interosseous membrane of the forearm • compartment of forearm (Posterior, Anterior) • Carpal tunnel • fascia (Antebrachial fascia) |
| Hand |
Anatomical snuff box • reticula of the hand (Extensor, Flexor) • Finger • Extensor expansion • Palmar aponeurosis |