Abductor Hallucis

Authors

Affiliations

Nate Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

Figure 1: Intrinsic foot muscles¹

Schematic of 1st layer of Plantar Intrinsic Foot Muscles²
1: Abductor hallucis
2: Flexor digitorum brevis
Abductor digiti minimi

1st Layer Intrinsic Plantar Foot Muscles²

1st layer of the plantar foot³

2nd layer of the plantar foot³

3rd layer of the plantar foot³

Reading list

• Ch70 Intrinsic muscles of the foot⁴
• Neuman⁵

Overview

Muscle	Origin	Insertion	Innervation	Action
Abductor hallucis	Medial calcaneal tuberosity Plantar aponeurosis Flexor retinaculum	Medial aspect of 1st Proximal phalanx	Medial Plantar n. S1 - S2	1st Toe: MTP Flexion, MTP Abduction Arch support: Longitudinal arch support

Origin

• Medial calcaneal tuberosity²
• Plantar aponeurosis²
• Flexor retinaculum²

Insertion

Medial proximal phalanx of 1st toe²

Innervation

Medial Plantar N. (S1, S2)²

Action

• 1st MTP: flexion, abd of first toe²
• Longitudinal Arch: Support²

MMT

1.

Betts JG, Blaker W. Anatomy and Physiology. 2nd ed. OpenStax; 2022. https://openstax.org/details/books/anatomy-and-physiology-2e/?Book%20details

2.

Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.

3.

Gray H. Anatomy of the Human Body. 20th ed. (Lewis WH, ed.). Lea & Febiger; 1918. https://www.bartleby.com/107/

4.

Donnelly JM, Simons DG, eds. Travell, Simons & Simons’ Myofascial Pain and Dysfunction: The Trigger Point Manual. Third edition. Wolters Kluwer Health; 2019.

5.

Neumann DA, Kelly ER, Kiefer CL, Martens K, Grosz CM. Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. 3rd ed. Elsevier; 2017.