Gastrocnemius

Gastrocnemius Origin

The gastrocnemiusPlantarflexor / Flexor Large calf muscle; pushes you forward when you walk or jump muscle originates from two distinct heads. The medialToward the midline of the body headRounded proximal end that fits into the acetabulum of the hip bone. starts from the posterior aspect of the medial femoral condyle. The lateralAway from the midline of the body. head begins at the lateral femoral condyle.
Insertion

Gastrocnemius Insertion

Both heads combine to form a large belly that tapers into a thick tendon. This tendon is attached to the posterior surface of the calcaneusHeel bone; largest tarsal; attachment site for Achilles tendon. bone (heel bone). It connects via the Achilles tendon. This is a powerful and essential structure for foot movementA fundamental property of life involving motion of the body or its parts. and stability.
Actions

Gastrocnemius Actions

Assisting in Flexion of the Knee

Plantar Flexion of the Foot