Supraspinatus - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x 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 (2026) 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 Frequent questions What is the supraspinatus muscle? The supraspinatus is an intrinsic muscle located in the shoulder region and is part of the rotator cuff muscle group. It plays a crucial role in shoulder stability and movement. Where does the supraspinatus muscle originate and attach? The supraspinatus originates from the supraspinous fossa of the scapula and attaches to the greater tubercle of the humerus. This positioning allows it to effectively contribute to shoulder abduction. What is the primary action of the supraspinatus? The primary action of the supraspinatus is the abduction of the upper limb at the shoulder, specifically performing the initial 0-15 degrees of abduction and assisting the deltoid muscle from 15 to 90 degrees. Which nerve innervates the supraspinatus muscle? The supraspinatus muscle is innervated by the suprascapular nerve. This nerve is essential for the muscle's function in shoulder movement. What is the blood supply to the supraspinatus? The supraspinatus receives its blood supply from the suprascapular artery. This vascular support is vital for the muscle's health and functionality. Rate This Article