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 1The rotator cuff muscles, which act to stabilise the shoulder joint. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Print Article Rate This Article