Editing Extensor hallucis longus muscle (section)

== Structure ==
The muscle ends as a tendon of insertion. The tendon passes through a distinct compartment in the [[inferior extensor retinaculum of foot]]. It crosses anterior tibial vessels lateromedially near the bend of the ankle.{{Citation needed|date=August 2023}} In the foot, its tendon is situated at along the medial side of the dorsum of the foot.'''<ref name=":0223">{{Cite book |last=Sinnatamby |first=Chummy |title=Last's Anatomy |publisher= |year=2011 |isbn=978-0-7295-3752-0 |edition=12th |pages=144}}</ref>''' Opposite the [[Metatarsophalangeal articulations|metatarsophalangeal articulation]], the tendon gives off a thin prolongation on either side, to cover the surface of the joint. An expansion from the medial side of the tendon is usually inserted into the base of the proximal phalanx.{{Citation needed|date=August 2023}}

=== Origin ===
The extensor hallucis longus muscle arises from the middle portion of'''<ref name=":02">{{Cite book |last=Sinnatamby |first=Chummy |title=Last's Anatomy |publisher= |year=2011 |isbn=978-0-7295-3752-0 |edition=12th |pages=144}}</ref>''' the anterior surface{{Citation needed|date=August 2023}} of the [[fibula]] and adjacent [[Interosseous membrane of leg|interosseous membrane of the leg]].'''<ref name=":022">{{Cite book |last=Sinnatamby |first=Chummy |title=Last's Anatomy |publisher= |year=2011 |isbn=978-0-7295-3752-0 |edition=12th |pages=144}}</ref>''' Its origin is medial to the origin of the [[extensor digitorum longus muscle]].{{Citation needed|date=August 2023}}

=== Insertion ===
The muscle inserts at the base of the [[Distal phalange|distal phalanx]] of the great toe.'''<ref name=":0222">{{Cite book |last=Sinnatamby |first=Chummy |title=Last's Anatomy |publisher= |year=2011 |isbn=978-0-7295-3752-0 |edition=12th |pages=144}}</ref>'''

===Nerve supply===
The muscle receives motor innervation from the [[deep fibular nerve]] ([[Lumbar nerves|L5]])'''<ref name=":022" />''' (a branch of [[common fibular nerve]]).

=== Relations ===
The anterior tibial vessels and deep fibular nerve pass between this muscle and the tibialis anterior muscle.

===Variation===
Occasionally united at its origin with the [[Extensor digitorum longus muscle|extensor digitorum longus]].

The [[extensor ossis metatarsi hallucis]], a small muscle, sometimes found as a slip from the extensor hallucis longus, or from the tibialis anterior, or from the extensor digitorum longus, or as a distinct muscle; it traverses the same compartment of the transverse ligament with the extensor hallucis longus.

=== Actions/movements ===
The muscle extends/dorsiflects the [[Toe#Hallux|big toe]] (primary action), and [[Dorsiflexion|dorsiflects]] the [[foot]] (secondary action).'''<ref name=":022" />'''