Extensor Hallucis Longus Muscle
Gastrocnemius Muscle – Attachments, Actions & Innervation
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The gastrocnemius muscle is a leg muscle located at the calf that spans over both the knee and the ankle joint.
Gastrocnemius Muscle
Attachments of Gastrocnemius Muscle: Origin & Insertion
Origin: (proximal attachments):
a. Medial head: medial condyle of femur and area just above condyle.
b. Lateral head: lateral condyle of femur and area just above condyle.
Insertion: (distal attachments):
Posterior calcaneus via calcaneal tendon.
Actions of Gastrocnemius Muscle:
a. 
Plantar flexes foot.
Learn the anatomy of the gastrocnemius muscle in half the time with our handy lower extremity muscle anatomy chart!
b. Flexes the leg at the knee.
Nerve to Muscle and its Spinal Segment:
Tibial nerve (S1, S2).
Test yourself
Muscles That Act On Foot & Ankle (From Post. Leg Comp.)
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