Abductor hallucis muscle

Abductor hallucis muscle
First layer of muscles of the sole of the foot (abductor hallucis visible at lower right)
Details
Origin Medial process of calcaneal tuberosity, Plantar aponeurosis, Flexor retinaculum
Insertion Medial aspect of base of 1st phalanx of hallux
Artery Medial plantar artery
Nerve Medial plantar nerve
Actions Abducts hallux
Antagonist Adductor hallucis muscle
Identifiers
Latin Musculus abductor hallucis
TA A04.7.02.056
FMA 37448
Anatomical terms of muscle

The abductor hallucis muscle is an intrinsic muscle of the foot. It participates in the abduction and flexion of the great toe.

Structure

The abductor hallucis as seen from an inferior projection of the foot. This diagram shows the bottom-most layer of muscles, just under the plantar skin of the foot.

The abductor hallucis muscle is located in the medial border of the foot and contributes to form the prominence that is observed on the region. It is inserted behind on the tuberosity of the calcaneus, the flexor retinaculum, and the plantar aponeurosis.[1] Its muscle body, relatively thick behind, flattens as it goes forward. It ends in a common tendon with the medial head of the flexor hallucis brevis that inserts on the medial surface of the base of the first proximal phalanx and its related sesamoid bone. Its medial surface is superficial and covered with the muscle's fascia and the skin.[2]


Innervation

Abductor hallucis is innervated by the medial plantar nerve. The nerves that supply it enter the muscle from its upper border. The deep tendon reflex of the abductor hallucis.[3] was first described and demonstrated by Dr. M. W. Spanakos.

Additional images

See also

References

This article incorporates text in the public domain from page 491 of the 20th edition of Gray's Anatomy (1918)

  1. ↑ "Abductor Hallucis". Loyola University Medical Education Network. Retrieved 7 January 2015.
  2. ↑ Latarjet, Michel; Ruiz Liard, Alfredo (2005). Human Anatomy (Spanish Edition). Editorial Médica Panamericana. ISBN 978-950-06-1368-2.
  3. ↑ {Template:Www.youtube.com/watch?v=tte7pUX5xx4
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