Origin: Supraspinous fossa of scapula
Insertion: Superior facet of the greater tubercle of the humerus
Actions: Abduction of arm
Innervation: Suprascapular nerve (C5, C6)
Blood Supply: Suprascapular artery from the thyrocervical trunk and the dorsal scapular artery.
Primary Actions of the Supraspinatus Muscle
Primary Actions of the Supraspinatus
1. Abduction of the arm at the shoulder
- Deltoid (middle fibers)
- Latissimus Dorsi
- Pectoralis Major
- Teres Major
- Triceps Brachii (long head)
Muscle Pain Information: The supraspinatus muscle contributes to pain in the shoulder, elbow, and arm. Pain occasionally radiates up into the neck and back of the head.