Extensor Retinaculum (Wrist): Difference between revisions

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'''Original Editor '''- [[User:User Name|User Name]]
'''Original Editor '''- [[User:Sameera Withanage|Sameera Withanage]]


'''Top Contributors''' - {{Special:Contributors/{{FULLPAGENAME}}}}
'''Top Contributors''' - {{Special:Contributors/{{FULLPAGENAME}}}}
</div>  
</div>  
== Description ==
== Description ==
 
[[File:Extensor Retinaculum of the wrist.png|alt=Extensor Retinaculum of the wrist|thumb|'''Extensor Retinaculum of the wrist''']]
Extensor Retinaculum is a fibrous, thickened band that holds the extensor tendons at the dorsum of the [[Wrist and Hand|wrist]]. It is an oblique band runs downwards and medially preventing bowstringing.<ref name=":0">Robertson BL, Jamadar DA, Jacobson JA, Kalume-Brigido M, Caoili EM, Margaliot Z, De Maeseneer MO. [https://www.ajronline.org/doi/pdf/10.2214/AJR.05.0764 Extensor retinaculum of the wrist: sonographic characterization and pseudotenosynovitis appearance]. American Journal of Roentgenology. 2007 Jan;188(1):198-202.</ref><ref name=":1">Chaurasia BD. BD Chaurasia's Human Anatomy. CBS Publishers & Distributors PVt Ltd.; 2010.</ref><ref>Taleisnik J, Gelberman RH, Miller BW, Szabo RM. The extensor retinaculum of the wrist. Journal of Hand Surgery. 1984 Jul 1;9(4):495-501.</ref>
=== Attachments  ===
=== Attachments  ===
''Laterally:''
# Lower part of the anterior border of the [[radius]].<ref name=":1" />
''Medially:''
# Styloid process of the [[ulna]].<ref name=":1" />
# [[Triquetrum|Triquetral]].<ref name=":1" />
# [[Pisiform]].<ref name=":1" />


== Function  ==
== Function  ==
Extensor Retinaculum helps to keep the extensor tendons in alignment and prevent bowstringing during [[Wrist and Hand Mobilisations|movements]].<ref name=":0" />


== Clinical relevance ==
== Clinical relevance ==
 
By extending fascial attachments to the underlying [[Bone|bones]] and [[periosteum]], the retinaculum forms six osseofascial compartments over the [[Wrist and Hand Examination|dorsal wrist]]. There are several structures passing through each compartment from lateral to the medial side and each compartment is lined by a synovial sheath.<ref name=":1" /><ref>Standring S, editor. Gray's anatomy e-book: the anatomical basis of clinical practice. Elsevier Health Sciences; 2015 Aug 7.</ref>
== Assessment ==
{| class="wikitable"
 
|+Structures passing through Extensor retinaculum
== Treatment ==
!Compartment
 
!Structure
== Resources ==
|-
|1
|
* [[Abductor pollicis longus]]
* [[Extensor Pollicis Brevis|Extensor pollicis brevis]]
|-
|2
|
* [[Extensor carpi radialis longus]]
* [[Extensor Carpi Radialis Brevis|Extensor carpi radialis brevis]]
|-
|3
|
* [[Extensor Pollicis Longus|Extensor pollicis longus]]
|-
|4
|
* Extensor digitorum
* Extensor indicis
* [[Posterior Interosseous Nerve Syndrome|Posterior interosseous nerve]]
* Anterior interosseous artery
|-
|5
|
* Extensor digiti minimi
|-
|6
|
* [[Extensor Carpi Ulnaris|Extensor carpi ulnaris]]
|}


== References ==
== References ==
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<references />  
<references />  


[[Category:Anatomy]] [[Category:Ligaments]]
[[Category:Anatomy]]  
[[Category:Ligaments]]

Latest revision as of 16:02, 29 August 2023

Original Editor - Sameera Withanage

Top Contributors - Sameera Withanage, Kim Jackson, Ewa Jaraczewska and Lucinda hampton

Description[edit | edit source]

Extensor Retinaculum of the wrist
Extensor Retinaculum of the wrist

Extensor Retinaculum is a fibrous, thickened band that holds the extensor tendons at the dorsum of the wrist. It is an oblique band runs downwards and medially preventing bowstringing.[1][2][3]

Attachments[edit | edit source]

Laterally:

  1. Lower part of the anterior border of the radius.[2]

Medially:

  1. Styloid process of the ulna.[2]
  2. Triquetral.[2]
  3. Pisiform.[2]

Function[edit | edit source]

Extensor Retinaculum helps to keep the extensor tendons in alignment and prevent bowstringing during movements.[1]

Clinical relevance[edit | edit source]

By extending fascial attachments to the underlying bones and periosteum, the retinaculum forms six osseofascial compartments over the dorsal wrist. There are several structures passing through each compartment from lateral to the medial side and each compartment is lined by a synovial sheath.[2][4]

Structures passing through Extensor retinaculum
Compartment Structure
1
2
3
4
5
  • Extensor digiti minimi
6

References[edit | edit source]

  1. ↑ 1.0 1.1 Robertson BL, Jamadar DA, Jacobson JA, Kalume-Brigido M, Caoili EM, Margaliot Z, De Maeseneer MO. Extensor retinaculum of the wrist: sonographic characterization and pseudotenosynovitis appearance. American Journal of Roentgenology. 2007 Jan;188(1):198-202.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Chaurasia BD. BD Chaurasia's Human Anatomy. CBS Publishers & Distributors PVt Ltd.; 2010.
  3. ↑ Taleisnik J, Gelberman RH, Miller BW, Szabo RM. The extensor retinaculum of the wrist. Journal of Hand Surgery. 1984 Jul 1;9(4):495-501.
  4. ↑ Standring S, editor. Gray's anatomy e-book: the anatomical basis of clinical practice. Elsevier Health Sciences; 2015 Aug 7.
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