Extensor digitorum brevis muscle

Jump to: navigation, search
Extensor digitorum brevis muscle
Gray441.png
The mucous sheaths of the tendons around the ankle. Lateral aspect. (Extensor dig. brevis labeled at upper right.)
Latin musculus extensor digitorum brevis
Gray's subject #131 490
Origin calcaneus
Insertion    toes
Artery:
Nerve: deep peroneal nerve
Action: extends digits 2 through 4
Antagonist: Flexor digitorum longus, Flexor digitorum brevis
Dorlands
/Elsevier
m_22/12548900

The extensor digitorum brevis muscle is a muscle on the upper surface of the foot that helps extend digits 2 through 4.

Structure

The extensor digitorum brevis is found on the back of the foot. It arises with the extensor hallucis brevis muscle from the calcaneus bone; many consider these two muscles are a single common muscle.

The extensor digitorum brevis divides into three tendons, which insert on the second, third, and fourth middle phalanges.

Innervation

The extensor digitorum brevis is innervated by the deep fibular nerve (deep peroneal nerve).

Action

The extensor digitorum brevis help to extend the toes to which it attaches.

See also

Additional images

External links

de:Musculus extensor digitorum brevis

Linked-in.jpg