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
- Abduction.
- Stabilisation of the humerus.
Innervation
- Suprascapular nerve.
Daily uses
- Holding shopping bags away from the body.
Example strengthening exercises
- Lateral raise.
- Shoulder external rotation.
Example stretches
- Supraspinatus stretch.
- Posterior shoulder stretch.
- Posterior shoulder stretch II.
Related injuries
- Inflammation of the supraspinatus tendon.
- Rotator cuff injuries.
- Impingement syndrome.
Related muscles
- Infraspinatus Subscapularis.
- Teres minor.
