Name
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.