Soleus Anatomy

Soleus Muscle

Origin: Laterally to the head and the superior 1/3 of the fibula
Medially to the middle 1/3 of the medial border of the tibia and the interosseous membrane
Insertion: Attaches into the calcaneus via the Achilles tendon
Actions: Plantarflexion of the foot at the ankle
Innervation: Tibial nerve S1, S2
Blood Supply: Branches from the anterior tibial artery and posterior tibial artery

Primary Actions of the Soleus Muscle

  1. Plantarflexion of the foot at the ankle

Agonists:

  • Gastrocnemius

Antagonists:

  • Tibialis Anterior

Plantaris, tibialis posterior, peroneus longus, flexor hallucis longus, and flexor digitorum longus assist with plantarflexion of the foot at the ankle.

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