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Abductor hallucis

Region

Origin & Insertion

['Origin: Medial calcaneal tuberosity', 'Insertion: Medial base of proximal phalanx of great toe']

Synergistic Muscles

['FHB', 'Adductor hallucis']

Joints

['1st MTP joint']

Primary Actions

['Abducts and flexes great toe']

Nerve & Spinal Segment

Medial plantar nerve

Sacral plexus; S1–S2

Interesting

Helps maintain medial arch. [Netter’s]

Reversal of Action

Medial arch lift via toe activation

Common Dysfunctions

Flat arch, hallux valgus (bunions)

How to Stretch

Adduct toe inward.

Trigger Points

How to Strengthen

Doming and toe press.

Concentric Action

Abduct big toe medially

Applications:

Supports balance and intrinsic foot strength

Eccentric Action

Control toe return toward midline

Isotonic Action

Toe splay drills

Related Conditions

['Plantar fasciitis', 'Hallux valgus']

Isometric Action

Hold big toe pulled away from 2nd toe

Exercise Ideas

['Toe spread and hold', 'Arch raise', 'Big toe lifts']

Related Blogs

Images

Videos

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