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image: Supraspinatus


 Articulations :

 Action :

  • Initiates and assists deltoid in abduction of arm and acts with other rotator cuff muscles.

Origin :

  • Supraspinous fossa of scapula.

Insertion :

  • Superior facet on greater tuberosity of humerus.

Innervation :

  • Suprascapular nerve (C4, C5 and C6)

Arterial Supply :

  • Suprascapular artery

Depth :

  • Deep
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