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Supraspinatus

The Supraspinatus muscle is one of the four muscles which make up the rotator cuff. Its main function is to stabilise the upper arm by holding the head of the humerus in position. It is important in throwing motions to control any forward motion of the head of humerus.

 

Origin

  • Supraspinous fossa.

Insertion

  • Greater tuberosity of the humerus.

Actions

  • Shoulder abduction.
  • Stabilisation of the humerus.

Innervation

  • Suprascapular nerve.

Daily uses

  • Holding shopping bags away from the body.

Example strengthening exercises

Example stretches

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