Peroneus Longus - Muscle Physiology & Functional Anatomy

 

Peroneus Longus Muscle

Anatomy

 

Origin:

  • Upper two thirds of lateral shaft of fibula , head of fibula and superior tibiofibular joint

Insertion

  • Lateral surface of the medial cuneiform & plantar aspect (lateral side) of base of 1st metatarsal



Major Arteries:

  • Fibular (peroneal) artery

 

Neural Innervation:

  • Superficial fibular (peroneal) nerve (L5,S1)

 

Trigger Points: 

Trigger points for the peroneus longus

 

Physiology

 

Concentric Functions:

  • Plantar flexion & eversion (pronation) of the foot

Eccentric Functions:

  • Decelerates ankle dorsiflexion

Isometric Function:

  • Helps stabilizes the foot & ankle complex

  • Supports the (lateral longitudinal & transverse) arches of the foot


Related Muscles


Antagonist:


Exercises:

 

 


More Images of the Peroneus Longus Muscle

Peroneus Longus


More Information about the Peroneus Longus Muscle

The peroneus longus muscle sometimes referred to the fibularis longus, is the largest & most superficial of 3 peroneal muscles.  The terms peroneus & peroneal are derived from the Greek word "Perone" meaning pin of a brooch or a buckle. In medical terminology, both terms refer to being of or relating to the fibula or to the outer portion of the leg.

 

Back to Anatomy InformationFunctional Anatomy Chart