An infraspinatus muscle is one of the
deep muscles located below the scapula (bone).
For a detailed illustration of their location see the page about Posterior
Muscles in the "Topics & Articles" Section
of the IvyRose website.
Further information about the infraspinatus muscles
is summarised below:
Point(s) of Origin:
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Lower posterior surface of scapula (shoulder bone).
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Point(s) of Insertion:
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Great tuberosity of humerus.
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Action(s):
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Outwardly rotates the arm.
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