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Soleus
Region
Origin & Insertion
['Origin: Posterior head of fibula, soleal line of tibia', 'Insertion: Calcaneus via Achilles tendon']
Synergistic Muscles
['Gastrocnemius', 'Tibialis posterior']
Joints
['Ankle']
Primary Actions
['Plantarflexion (especially with flexed knee)']
Nerve & Spinal Segment
Tibial nerve
Sacral plexus; S1–S2
Interesting
Postural stabilizer during standing. [Moore’s]
Reversal of Action
Lift tibia over foot with foot planted
Common Dysfunctions
Chronic tightness, impaired standing endurance
How to Stretch
Bent knee wall calf stretch.
Trigger Points
How to Strengthen
Seated heel raise.
Concentric Action
Plantarflex ankle (with knee bent)
Applications:
Primary endurance calf muscle; key in postural and venous return function
Eccentric Action
Control return from tiptoe with bent knee
Isotonic Action
Seated heel raises
Related Conditions
['Achilles tendinitis', 'Venous stasis']
Isometric Action
Hold isometric heel raise in bent knee
Exercise Ideas
['Seated calf raise', 'Toe presses', 'Single-leg heel raise']
Related Blogs
Images
Videos
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