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Flexor Hallucis Brevis

Region

Origin & Insertion

['Origin: Cuboid and lateral cuneiform bones', 'Insertion: Base of proximal phalanx of great toe (via two tendons)']

Synergistic Muscles

['Flexor hallucis longus', 'Abductor hallucis']

Joints

['1st MTP joint']

Primary Actions

['Flexes great toe at MTP joint']

Nerve & Spinal Segment

Medial plantar nerve

Sacral plexus; S1–S2

Interesting

Sesamoid bones embedded in tendon. [Netter’s]

Reversal of Action

Raise arch using big toe contraction

Common Dysfunctions

Weak toe-off, reduced medial arch support

How to Stretch

Great toe extension with gentle pressure.

Trigger Points

How to Strengthen

Big toe curls and lifts.

Concentric Action

Flex big toe at MTP joint

Applications:

Supports medial longitudinal arch; often weak in flatfoot

Eccentric Action

Control big toe extension

Isotonic Action

Toe curls with towel or band

Related Conditions

['Hallux valgus', 'Metatarsalgia']

Isometric Action

Hold toe flexed against ground

Exercise Ideas

['Towel toe curls', 'Marble grabs', 'Toe doming']

Related Blogs

Images

Videos

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