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Peroneus Longus Muscle Anatomy: Origin, Insertion, Action

Peroneus Longus Muscle Anatomy Study: Origin, Insertion, Action and Innervation

Anatomy of the Peroneus Longus Lower Leg Muscle
Origin: Head and proximal two-thirds of the lateral surface of the fibula, and the anterior and posterior intermuscular septa of the leg.
Insertion: Passing behind the lateral malleolus, running obliquely across the sole of the foot from lateral to medial, and ending on the base of the first metatarsal and the medial cuneiform bones
Action: Eversion of the foot at the subtalar joint
Innervation: Superficial Peroneal Nerve (L5, S1)
Blood Supply: Branches from the posterior tibial artery
Synergist: Gastrocnemius, Flexor digitorum longus, Flexor hallucis longus, Peroneus brevis, Tibialis posterior, Soleus, Plantaris


For Pain and Symptom Information See: Peroneus Longus and Peroneus Brevis Muscles: Low Leg, Ankle, Foot Pain


Primary Action of the Peroneus Longus:

1. Eversion of the foot at the subtalar joint

  • Agonists: Peroneus Brevis
  • Antagonists: Tibialis Anterior, Tibialis Posterior

Secondary Actions of the Peroneus Longus:

1. Assists with plantarflexion of the foot at the ankle

  • Agonists: Gastrocnemius, Soleus
  • Antagonists: Tibialis Anterior

2. Supports the lateral longitudinal and transverse arches of the foot

Trail Guide To The Body The Trail Guide To The Body is another excellent book to help you learn the musculature of the human body. Though the book is geared toward massage therapists and physical therapist assistants, the book with its illustrations and text helps anyone gain a thorough understanding of the human musculoskeletal system and movement. I highly recommend this book for anyone studying anatomy and believe that MTs, PTAs, and teachers of body movements should have this book in their possession. I also highly recommend this book for the lay person who wants to gain understanding of the muscle, skeletal system and how our bodies move. This book will not disappoint!


The Trigger Point Therapy Workbook – Claire Davies, Amber Davies, and David G. Simons

Basic Clinical Massage Therapy: Integrating Anatomy and Treatment – James H. Clay and David M. Pounds

Trigger Point Therapy for Myofascial Pain – Donna Finando and Steven Finando

Massage Therapy Principles and Practice – Susan Salvo

Theory & Practice of Therapeutic Massage – Mark Beck


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