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Extensor digitorum brevis

Other Terms: Musculus extensor digitorum brevis, Muscle court extenseur des orteils

Muscle parts

None

Latin name

Musculus extensor digitorum brevis

Latin muscle parts

None

Group

Foot muscle – dorsal group

Etymology

In English this muscle’s name is the short muscle that straightens the toes. The word extensor comes from the Latin ex meaning “out from” and tendere meaning “to stretch.” The term digitorum is from the Latin digitus, which originally meant the “pointing thing,” a term that is similar to the Sanskrit word “dic” meaning to show or point out. Because we point with our fingers the term was applied to the fingers and then the toes. Brevis is the Latin term meaning “short.” This is being used as a comparative reference to a longer muscle that does the same thing.

Origin

Dorsolateral surface of the calcaneus and the talocalcaneal ligament.

Insertion

Lateral border of the tendons of the extensor digitorum longus muscle to the second, third, and fourth toes.

Action

Assists with extension of second, third, and fourth toes.

Nerve supply

Deep peroneal nerve (L5 and S1)

Blood supply

The perforating branch of the peroneal artery, anterior lateral malleolar artery, lateral tarsal arteries, dorsalis pedis artery, arcuate artery, second and third dorsal metatarsal arteries, and dorsal digital arteries.

Latin

Musculus extensor digitorum brevis

French

Muscle court extenseur des orteils

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