Extensor Digitorum Brevis:Origin, Insertion, Action & Nerve Supply

Extensor digitorum brevisThe extensor digitorum brevis muscle is placed on the top of the foot. The muscle is attached to tendons that extend to the toes.


Origin: Originates from the calcaneus, the interosseous talocalcaneal ligament, and the inferior extensor retinaculum.
Insertion: The extensor digitorum brevis inserts into the long extensor tendons of the four lateral digits.
Function: The extensor digitorum brevis muscle helps the extensor digitorum longus in extending the lateral four toes at the metatarsophalangeal and interphalangeal joints.
Nerve Supply: Deep fibular nerve.


Muscles of the Lower Limb