Flexor hallucis brevis muscle

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Flexor hallucis brevis muscle
Musculus flexor hallucis brevis.png
Muscles of the sole of the foot. Third layer. (Flexor hallucis brevis visible at left.)
Latin musculus flexor hallucis brevis
plantar surface of cuboid and lateral cuneiform bones
base of proximal phalanx of hallux
medial plantar nerve
Actions flex hallux
Extensor hallucis longus muscle
Gray's p.493
TA A04.7.02.057
FMA 37449
Anatomical terms of muscle

The Flexor hallucis brevis arises, by a pointed tendinous process, from the medial part of the under surface of the cuboid bone, from the contiguous portion of the third cuneiform, and from the prolongation of the tendon of the Tibialis posterior which is attached to that bone.


It divides in front into two portions, which are inserted into the medial and lateral sides of the base of the first phalanx of the great toe, a sesamoid bone being present in each tendon at its insertion.

The medial portion is blended with the Abductor hallucis previous to its insertion; the lateral portion with the Adductor hallucis; the tendon of the Flexor hallucis longus lies in a groove between them; the lateral portion is sometimes described as the first Interosseous plantaris.


Flexor hallucis brevis is innervated by the medial plantar nerve.


Origin subject to considerable variation; it often receives fibers from the calcaneus or long plantar ligament. Attachment to the cuboid sometimes wanting. Slip to first phalanx of the second toe.


It flexes hallucis together with musculus flexor hallucis longus



The 'English' name flexor hallucis brevis muscle is partly Latin, i.e. flexor hallucis brevis and partly English, i.e. muscle. The full Latin expression as used in the current edition[1] of the official Latin nomenclature (Terminologia Anatomica) is musculus flexor hallucis brevis. Flexor is derived[2] from classical Latin flectere, to bend.[3] Brevis means short.[3]

In classical Latin hallex,[4][5] allex,[4][3] hallus [4] and allus,[4] with genitive (h)allicis and (h)alli, are used to refer to the big toe. The form hallux (genitive, hallucis) currently in use is however a blend word of the aforementioned forms.[4][6] Musculus flexor hallicis brevis[7] is used instead by some.

Additional images[edit]


This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

  1. ^ Federative Committee on Anatomical Terminology (1998). Terminologia Anatomica. Stuttgart: Thieme[page needed]
  2. ^ Triepel, H. (1910). Die anatomischen Namen. Ihre Ableitung und Aussprache. Mit einem Anhang: Biographische Notizen.(Dritte Auflage). Wiesbaden: Verlag J.F. Bergmann.[page needed]
  3. ^ a b c Lewis, C.T. & Short, C. (1879). A Latin dictionary founded on Andrews' edition of Freund's Latin dictionary. Oxford: Clarendon Press.[page needed]
  4. ^ a b c d e Hyrtl, J. (1880). Onomatologia Anatomica. Geschichte und Kritik der anatomischen Sprache der Gegenwart. Wien: Wilhelm Braumüller. K.K. Hof- und Unversitätsbuchhändler.[page needed]
  5. ^ Triepel, H. (1908). Memorial on the anatomical nomenclature of the anatomical society. In A. Rose (Ed.), Medical Greek. Collection of papers on medical onomatology and a grammatical guide to learn modern Greek (pp. 176-193). New York: Peri Hellados publication office.
  6. ^ Triepel, H. (1910). Die anatomischen Namen. Ihre Ableitung und Aussprache. Mit einem Anhang: Biographische Notizen.(Dritte Auflage). Wiesbaden: Verlag J.F. Bergmann.[page needed]
  7. ^ Triepel, H. (1910). Nomina Anatomica. Mit Unterstützung von Fachphilologen. Wiesbaden: Verlag J.F. Bergmann.[page needed]

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