Author: Dr Peter de Souza
Last modified: 14 November 2022

The supraspinatus muscle is one of the rotator cuff muscles which arises from the supraspinous fossa (above the spine of the scapula). Its muscle fibres converge to form a thin tendon which passes beneath the acromion process attaching to the superior facet on the greater tubercle of the humerus.


  • Supraspinous fossa of scapula


  • Greater tubercle of humerus (superior facet)


  • Initiates and assists in shoulder abduction
  • Assists in stabilisation of glenohumeral joint


  • Suprascapular nerve: C5, 6

Blood Supply

  • Suprascapular artery