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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