Extensor Digitorum Brevis

起源[edit|edit source]

这是一个内在肌肉在做rsum of the foot.It arises from the upper and lateral of surface of the calacaneous,floor of tarsal sinus, talocalcaneal ligament, stem of inferior extensor retinaculum^[1][2]

Insertion[edit|edit source]

It`s tendons inserted into the long tendons of four medial digits (toes 2_4)^[2]

Nerve supply[edit|edit source]

deep fibular nervre ( L5 orS1 or both )^[2]

Action[edit|edit source]

HelpsExtensor digiorium longusin extending of metatarsophalangeal joints, interphalangeal joints of the 2nd, 3rd and 4th toes^[2]