The supraspinatus is an intrinsic muscle of the shoulder region. It is part of the rotator cuff muscle group.
- Attachments: Originates from the supraspinous fossa of the scapula and attaches to the greater tubercle of the humerus.
- Actions: Abduction of the upper limb at the shoulder. It performs the first 0-15o of abduction, and assists the deltoid muscle for 15-90o
- Innervation: Suprascapular nerve.
- Blood supply: Suprascapular artery
By TeachMeSeries Ltd (2025)
Fig 1
The rotator cuff muscles, which act to stabilise the shoulder joint.