Origin
Infraspinous fossa
Insertion
Greater tubercle of the humerus
Actions
- External rotation of the shoulder
- Stabilisation of glenohumeral joint
Innervation
- Suprascapular nerve (C5, C6)
Blood Supply
- Suprascapular and circumflex scapular arteries
Would you like to learn more about the infraspinatus muscle? Then check out the infraspinatus muscle article and video by clicking the link below: Infraspinatus Muscle Anatomy
