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image: Gastrocnemius
Gastrocnemius

Gastrocnemius

 Articulations :

 Action :

  • Powerful plantar flexor of ankle.

Origin :

  • Medial head from posterior nonarticular surface of medial femoral condyle.
  • Lateral head from lateral surface of femoral lateral condyle.

Insertion :

  • The two heads unite into a broad aponeurosis which eventually unites
  • with the deep tendon of the soleus to form the Achilles tendon,
  • inserting on the middle 1/3 of the posterior calcaneal surface

Innervation :

  • Tibial nerve (S1, S2)

Arterial Supply :

  • Each head supplied by a sural branch of the popliteal artery

Depth :

  • Superficial
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