Updated: 10/19/2017

Supraspinatus

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Origin Supraspinous fossa of scapula
Insertion Superior facet on greater tuberosity of humerus
Action Initiates and assists deltoid in abduction of arm and acts with other rotator cuff muscles
Innervation Suprascapular nerve (C4, C5 and C6) (C4, C5, C6)
Arterial Supply Suprascapular artery

 
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