The musculus supraspinatus (latin for "upper body muscle“) is a skeletal muscle and runs almost horizontally above the shoulder. It is situated under the musculus trapezius. Together with the musculus teres minor, the musculus infraspinatus und musculus subscapularis create the rotator cuff, which are needed to hold the head of the humerus in the shoulder socket.
Origin
Fossa supraspinata scapulae
Insertion
Tuberculum majus humeri
Function
Abduction of the arm when over 70° (along with the M. deltoideus), limited external rotation of the arm
Innervation
Nervus suprascapularis
Spinal Segments
C5, C6