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Peroneus Longus

Region

Origin & Insertion

['Origin: Head and upper lateral surface of fibula', 'Insertion: Base of 1st metatarsal and medial cuneiform']

Synergistic Muscles

['Peroneus brevis']

Joints

['Ankle', 'Subtalar']

Primary Actions

['Eversion', 'Plantarflexion', 'Supports transverse arch']

Nerve & Spinal Segment

Superficial fibular (peroneal) nerve

Sacral plexus; L5–S2

Interesting

Wraps under foot to support arch. [Gray’s]

Reversal of Action

Lift lateral tibia over foot

Common Dysfunctions

Ankle instability, lateral foot strain

How to Stretch

Invert and dorsiflex foot.

Trigger Points

How to Strengthen

Eversion against band.

Concentric Action

Evert and plantarflex foot

Applications:

Key in ankle stability and lateral sprain prevention

Eccentric Action

Control inversion

Isotonic Action

Band resisted eversion

Related Conditions

['Peroneal tendinopathy', 'Sprain']

Isometric Action

Hold foot in everted position

Exercise Ideas

['Band eversion', 'Sidewalks', 'Ankle circles']

Spry Juncture, LLC

How to Evolve Gracefully