It consists of four main muscles. They are discussed below: SUPRASPINATUS MUSCLE ORIGIN Supraspinous fossa of scapula. INSERTION Superior facet of greater tubercle of humerus. ARTERY Suprascapular Artery. NERVE Suprascapular Nerve. MOVEMENT Abduction of Arm. INFRASPINATUS MUSCLE ORIGIN Infraspinous fossa of scapula. INSERTION Middle facet of greater tubercle of humerus. ARTERY Suprascapular Artery and Circumflex […]