Supraspinatus

  • The supraspinatus (also supraspinatus muscle, latin: musculus supraspinatus) is a triangular muscle of the shoulder girdle.

    Origin

    The supraspinatus originates from the walls of the supraspinous fossa of the scapula.

    Insertion

    The supraspinatus completely fills the supraspinous fossa, passes laterally and inserts onto the greater tubercle of the humerus.

    Action

    The supraspinatus is one of the rotator cuff muscles that provides abduction of the upper arm and stabilizes the shoulder.

    Innervation

    The supraspinatus is innervated by the suprascapular nerve.