INFRASPINATUS

Infraspinatus muscle

Origin of Infraspinatus

Infraspinous fossa of scapula.

Insertion of Infraspinatus

Middle facet on greater tuberosity of humerus.

Muscle Action/Function of Infraspinatus

Laterally rotate arm; helps to hold humeral head in glenoid cavity of scapula.

Arterial (Blood) Supply of Infraspinatus

Suprascapular and circumflex scapular arteries.

Infraspinatus Video

Infraspinatus Muscle

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