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Peroneus Brevis

Region

Origin & Insertion

['Origin: Distal two-thirds of lateral fibula', 'Insertion: Tuberosity of 5th metatarsal']

Synergistic Muscles

['Peroneus longus']

Joints

['Ankle']

Primary Actions

['Eversion', 'Plantarflexion']

Nerve & Spinal Segment

Superficial fibular (peroneal) nerve

Sacral plexus; L5–S2

Interesting

Often strained with ankle sprains. [Moore’s]

Reversal of Action

Support outer ankle while body shifts laterally

Common Dysfunctions

Lateral ankle sprain, weak eversion

How to Stretch

Inversion and dorsiflexion.

Trigger Points

How to Strengthen

Band eversion drills.

Concentric Action

Evert and plantarflex foot

Applications:

Stabilizer against lateral ankle rolls

Eccentric Action

Control return from eversion

Isotonic Action

Side-lying foot eversion with weight

Related Conditions

['Inversion sprain', 'Tendonitis']

Isometric Action

Sustain everted position under load

Exercise Ideas

['Theraband ankle turns', 'Toe out walks', 'Eversion holds']

Spry Juncture, LLC

How to Evolve Gracefully