Updated: 12/26/2021

Infraspinatus

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  • Summary
      • Infraspinatus
      • Origin
      • infraspinous fossa of scapula
      • Insertion
      • Middle facet on greater tuberosity of humerus
      • Action
      • Laterally rotate arm; helps to hold humeral head in glenoid cavity of scapula
      • Innervation
      • Suprascapular nerve (C5, C6)
      • Arterial supply
      • Suprascapular and circumflex scapular arteries

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