Name

# Extensor Digitorum Brevis (foot)

Pronunciation

(eks-TEN-sor dij-I-TOR-um BREV-is)

Origin/Proximal Attachment

Upper anterolateral calcaneus; inferior extensor retinaculum

Insertion/Distal Attachment

Middle & distal phalanges of2nd-4th toes (via Extensor Digitorum Longus)

Action/Relevance

Extends 2nd-4th toes

Innervation

Deep Peroneal nerve (L4, 5)

Notes

The Extensor digitorum brevis is a broad, thin muscle, which arises from the forepart of the upper and lateral surfaces of the calcaneus, in front of the groove for the Peronĉus brevis; from the lateral talocalcanean ligament; and from the common limb of the cruciate crural ligament. It passes obliquely across the dorsum of the foot, and ends in four tendons.