Extensor Digitorum Longus Muscle – Origins & Function – Human Anatomy | Kenhub

Extensor Digitorum Longus Muscle – Origins & Function – Human Anatomy | Kenhub


Hey there! It’s Matt from Kenhub! And in
this tutorial, we will discuss the function and anatomy of the extensor digitorum longus. The extensor digitorum longus or Musculus
extensor digitorum longus is one of the anterior muscles of the lower leg. These anterior muscles are a group of extensors.
They lie within the anterior compartment located at the ventrolateral region of the lower leg
where they form its surface structure. Their tendons are particularly prominent on
the dorsum of the foot. They include the tibialis anterior, the extensor hallucis longus, and
the extensor digitorum longus. The extensor digitorum longus muscle has three
points of origin. It originates at the lateral tibial condyle, the ventral side of the fibula,
and the interosseous membrane, and merges into a tendon above the superior extensor
retinaculum. Below the inferior extensor retinaculum, it
divides into four tendons inserting at the dorsal aponeurosis and the bases of the distal
and middle phalanges of the second through fifth toes. About 90% of people have an additional fifth
tendon running towards the lateral foot edge and inserting at the fifth metatarsal bone. All anterior muscles are innervated by the
deep fibular nerve. The main task of the anterior muscles of the
lower leg is the dorsal extension of the upper ankle joint. In addition, both the extensor digitorum longus
and extensor hallucis longus muscles are responsible for the lifting of the toes, the extension
of the first, middle, and end joints. Due to the course of the tendons, the anterior
muscles also contribute to the movement of the lower ankle joint. And in this function,
the extensor digitorum longus muscle provides a powerful eversion known as pronation. This video is more fun than reading a textbook,
right? If you want more videos, interactive quizzes,
articles, and an atlas of human anatomy, click on the “Take me to Kenhub” button. It is time to say goodbye to your old textbooks
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3 Replies to “Extensor Digitorum Longus Muscle – Origins & Function – Human Anatomy | Kenhub”

  1. Heyho Kenhubbers! Now that you know the key facts of the extensor digitorum longus muscle, let us know which topic you want to learn about next! Also, we have 3D animation videos about the functions of the lower leg muscles for our premium members. Check it out here: https://khub.me/2d9ce Happy studying!

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