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http://upload.orthobullets.com/topic/10016/images/subscapularis.jpg
Origin Subscapular fossa of scapula
Insertion Lesser tuberosity of humerus
Action Medially rotates arm and adducts it; helps to hold humeral head in glenoid cavity of scapula 
Innervation Upper and lower subscapular nerves (C5, C6 and C7) (C5, C6, C7) 
Arterial Supply Subscapular artery

 
 

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