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image: Posterior Deltoids
Posterior Deltoids

Posterior Deltoids

 Articulations :

 Action :

  • Extends and laterally rotates arm

Origin :

  • Lower border of the crest of the spine

Insertion :

  • Deltoid tuberosity, on the middle of the lateral surface of the shaft of the humerous

Innervation :

  • Axillary Nerve (C5, C6)

Arterial Supply :

  • Deltoid branch of thoracoacromial artery

Depth :

  • Superficial
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