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
- 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.