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{{short description|Y-shaped band placed in front of the ankle-joint}}
{{See also|Superior extensor retinaculum of foot}}
{{See also|Superior extensor retinaculum of foot}}
{{Infobox ligament
{{Infobox ligament
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The '''inferior extensor retinaculum of the foot''' ('''cruciate crural ligament''', '''lower part of anterior annular ligament''') is a Y-shaped band placed in front of the [[ankle-joint]], the stem of the Y being attached laterally to the upper surface of the [[calcaneus]], in front of the depression for the [[interosseous talocalcaneal ligament]]; it is directed medialward as a double layer, one lamina passing in front of, and the other behind, the tendons of the [[peroneus tertius]] and [[extensor digitorum longus]].
The '''inferior extensor retinaculum of the foot''' ('''cruciate crural ligament''', '''lower part of anterior annular ligament''') is a Y-shaped band placed in front of the [[ankle-joint]], the stem of the Y being attached laterally to the upper surface of the [[calcaneus]], in front of the depression for the [[interosseous talocalcaneal ligament]]; it is directed medialward as a double layer, one lamina passing in front of, and the other behind, the tendons of the [[peroneus tertius]] and [[extensor digitorum longus]].<ref>{{Cite book |title=Gray's Anatomy: the anatomical basis of clinical practice |date=2021 |publisher=Elsevier |isbn=978-0-7020-7705-0 |editor-last=Gray |editor-first=Henry |edition=42nd |location=Amsterdam |page=1430 |chapter=Chapter 79 Ankle and foot |editor-last2=Standring |editor-first2=Susan |editor-last3=Anhand |editor-first3=Neel}}</ref><ref>{{Cite journal |last=Dalmau-Pastor |first=M. |last2=Yasui |first2=Y. |last3=Calder |first3=J. D. |last4=Karlsson |first4=J. |last5=Kerkhoffs |first5=G. M. M. J. |last6=Kennedy |first6=J. G. |date=2016-05-29 |title=Anatomy of the inferior extensor retinaculum and its role in lateral ankle ligament reconstruction: a pictorial essay |url=http://link.springer.com/10.1007/s00167-016-4082-5 |journal=Knee Surgery, Sports Traumatology, Arthroscopy |language=en |volume=24 |issue=4 |pages=957–962 |doi=10.1007/s00167-016-4082-5 |issn=0942-2056 |via=Springer|hdl=2445/110811 |hdl-access=free }}</ref>


At the medial border of the latter tendon these two layers join together, forming a compartment in which the tendons are enclosed.
At the medial border of the latter tendon, these two layers join, forming a compartment in which the tendons are enclosed.


From the medial extremity of this sheath the two limbs of the Y diverge: one is directed upward and medialward, to be attached to the [[tibial malleolus]], passing over the [[extensor hallucis longus]] and the vessels and nerves, but enclosing the [[tibialis anterior]] by a splitting of its fibers.
From the medial extremity of this sheath, the two limbs of the Y diverge: one is directed upward and medialward, to be attached to the [[tibial malleolus]], passing over the [[extensor hallucis longus]] and the vessels and nerves but enclosing the [[tibialis anterior]] by a splitting of its fibers.


The other limb extends downward and medialward, to be attached to the border of the [[plantar aponeurosis]], and passes over the tendons of the extensor hallucis longus and tibialis anterior and also the vessels and nerves.
The other limb extends downward and medialward, to be attached to the border of the [[plantar aponeurosis]], and passes over the tendons of the extensor hallucis longus and tibialis anterior and also the vessels and nerves.
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<gallery>
<gallery>
File:Gray437.png|Muscles of the front of the leg.
File:Gray437.png|Muscles of the front of the leg.
File:Slide2ALE.JPG|Inferior extensor retinaculum of foot.Deep dissection.
File:Slide2ALE.JPG|Inferior extensor retinaculum of foot. Deep dissection.
</gallery>
</gallery>


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== References ==
== References ==
{{Gray's}}
{{Gray's}}
{{reflist}}

{{Lower limb general}}
{{Lower limb general}}
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{{Portal bar|Anatomy}}
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[[Category:Lower limb anatomy]]
[[Category:Lower limb anatomy]]

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Latest revision as of 12:10, 28 September 2024

See also: Superior extensor retinaculum of foot
Inferior extensor retinaculum of foot
The mucous sheaths of the tendons around the ankle. Lateral aspect.
The mucous sheaths of the tendons around the ankle. Medial aspect.
Details
Identifiers
Latinretinaculum musculorum extensorum inferius pedis, ligamentum cruciatum cruris
TA98A04.7.03.027
TA22713
FMA49385
Anatomical terminology

The inferior extensor retinaculum of the foot (cruciate crural ligament, lower part of anterior annular ligament) is a Y-shaped band placed in front of the ankle-joint, the stem of the Y being attached laterally to the upper surface of the calcaneus, in front of the depression for the interosseous talocalcaneal ligament; it is directed medialward as a double layer, one lamina passing in front of, and the other behind, the tendons of the peroneus tertius and extensor digitorum longus.[1][2]

At the medial border of the latter tendon, these two layers join, forming a compartment in which the tendons are enclosed.

From the medial extremity of this sheath, the two limbs of the Y diverge: one is directed upward and medialward, to be attached to the tibial malleolus, passing over the extensor hallucis longus and the vessels and nerves but enclosing the tibialis anterior by a splitting of its fibers.

The other limb extends downward and medialward, to be attached to the border of the plantar aponeurosis, and passes over the tendons of the extensor hallucis longus and tibialis anterior and also the vessels and nerves.

Additional images

[edit]
  • Muscles of the front of the leg.
    Muscles of the front of the leg.
  • Inferior extensor retinaculum of foot. Deep dissection.
    Inferior extensor retinaculum of foot. Deep dissection.

See also

[edit]

References

[edit]

Public domain This article incorporates text in the public domain from page 488 of the 20th edition of Gray's Anatomy (1918)

  1. ^ Gray, Henry; Standring, Susan; Anhand, Neel, eds. (2021). "Chapter 79 Ankle and foot". Gray's Anatomy: the anatomical basis of clinical practice (42nd ed.). Amsterdam: Elsevier. p. 1430. ISBN 978-0-7020-7705-0.
  2. ^ Dalmau-Pastor, M.; Yasui, Y.; Calder, J. D.; Karlsson, J.; Kerkhoffs, G. M. M. J.; Kennedy, J. G. (2016-05-29). "Anatomy of the inferior extensor retinaculum and its role in lateral ankle ligament reconstruction: a pictorial essay". Knee Surgery, Sports Traumatology, Arthroscopy. 24 (4): 957–962. doi:10.1007/s00167-016-4082-5. hdl:2445/110811. ISSN 0942-2056 – via Springer.
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