Flexor Digitorum Brevis

Original Editor - Oyemi Sillo

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Description[edit | edit source]

Flexor Digitorum Brevis is the central muscle of the superficial layer of the plantar foot muscles.[1] It lies in the middle of the sole, immediately superior to the plantar aponeurosis and inferior to the tendon of Flexor Digitorum Longus.[2]

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Origin[edit | edit source]

The Flexor Digitorum Brevis muscle originates from the medial process of calcaneal tuberosity and the central part of the plantar aponeurosis.[3]

Insertion[edit | edit source]

It inserts on the middle phalanges of the lateral four toes by a tendon to each toe.[3]

Nerve[edit | edit source]

Flexor Digitorum Brevis is supplied by the medial plantar nerve (S1 & S2), which is a terminal branch of the tibial nerve.[4]

Artery[edit | edit source]

The Flexor Digitorum Brevis is supplied by the medial and lateral plantar arteries.[3]

Function[edit | edit source]

Flexor Digitorum Brevis plantarflexes the four lateral toes at the proximal interphalangeal joint.[2]

Clinical relevance[edit | edit source]

As an intrinsic muscle of the foot, the Flexor Digitorum Brevis plays an important role in stabilising the longitudinal arch of the foot.[4]

References[edit | edit source]

  1. Jenkins, D. B. Hollinshead's functional anatomy of the limbs and back. St. Louis, Mo: Saunders/Elsevier. 2009.
  2. 2.0 2.1 Drake, R. L., Vogl, W., Mitchell, A. W. M., Gray, H., & Gray, H. Gray's anatomy for students. Philadelphia, PA: Churchill Livingstone/Elsevier. 2010.
  3. 3.0 3.1 3.2 Logan, B. M., & Hutchings, R. T. McMinn's Color Atlas of Foot and Ankle Anatomy E-Book. 2011.
  4. 4.0 4.1 Moore, K. L., Dalley, A. F., & Agur, A. M. R. Clinically oriented anatomy. Philadelphia: Wolters Kluwer/Lippincott Williams & Wilkins Health. 2014.