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Soleus Muscle

Medically reviewed by: Stephanie Curreli, MD, PhD
Last Updated: Jun 25, 2015

The soleus muscle is a thick, flat muscle located beneath the gastrocnemius. These two muscles make up the calf of the leg. The soleus rises from the tibia and fibula, and it extends to the heel by way of the Achilles tendon. It acts with the gastrocnemius to cause plantar flexion of the foot.