Extensor Digitorum Brevis

Original Editor - Ahmed Nasr Top Contributors - Ahmed Nasr and Kim Jackson

Origin

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Extensor Digitorum Brevis is one of the intrinsic muscles on the dorsum of the foot. It arises from the upper and lateral surface of the calcaneous, the floor of tarsal sinus, the talocalcaneal ligament, and the stem of the inferior extensor retinaculum [1][2]

Insertion

Its tendons insert into the long tendons of the four medial digits (toes 2_4)[2]

Nerve Supply

Deep fibular nerve ( L5 or S1 or both )[2]

Action

Assists Extensor digiorium longus in extending the metatarsophalangeal and interphalangeal joints of the 2nd, 3rd and 4th toes[2]

References

  1. Anatomy next. Extensor digitorium brevis. Available fromhttps://www.anatomynext.com/extensor-digitorum-brevis/ accessed at (26july 2019)
  2. 2.0 2.1 2.2 2.3 Keith L. , Anne M. R . Clinically Oriented Anatomy . philidephia : Lippincott Williams & Wilkins.Feb 13, 2013