Major Muscles of the Anterolateral Compartment of the Leg
Extensor Digitorum Longus – Origin, Insertion, Function, and Clinical Relevance
The extensor digitorum longus (EDL) is a key muscle in the anterolateral compartment of the leg, enabling toe extension and aiding dorsiflexion.
Major Muscles of the Anterolateral Compartment of the Leg
Extensor Digitorum Longus – Origin, Insertion, Function, and Clinical Relevance
The extensor digitorum longus (EDL) is a critical muscle in the anterolateral compartment of the leg, responsible for the extension of the lateral four toes and assisting in dorsiflexion of the foot.
Origin
The EDL originates from the lateral condyle of the tibia, the anterior surface of the fibula, and the interosseous membrane.
Insertion
It inserts into the distal phalanges of the second to fifth toes via four separate tendons.
Function
- Extends the lateral four digits at the metatarsophalangeal and interphalangeal joints.
- Assists in dorsiflexion of the foot.
Clinical Relevance
Dysfunction or injury to the EDL can lead to difficulty in extending the toes and reduced dorsiflexion, potentially impacting gait. Conditions such as compartment syndrome or nerve damage can affect its function.
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