Flexor digitorum brevis muscle

The flexor digitorum brevis muscle lies immediately superior to the plantar aponeurosis and inferior to the tendons of the flexor digitorum longus in the sole of the foot.


  • origin: medial process of calcaneal tuberosity and plantar aponeurosis
  • insertion: sides of plantar surface of middle phalanges of 2nd-5th digits
  • action: flexes lateral four toes at proximal interphalangeal joint
  • arterial supply: medial and lateral plantar arteries and plantar arch, plantar metatarsal and plantar digital artery
  • innervationmedial plantar nerve from tibial nerve

Anatomy: Lower limb

Anatomy: Lower limb

Article information

rID: 44457
Section: Anatomy
Synonyms or Alternate Spellings:
  • Flexor digitorum brevis

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Cases and figures

  • Case 1: normal foot MRI
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