Great scapular notch

The great scapular notch (or "spinoglenoid notch") is a notch which serves to connect the supraspinous fossa and infraspinous fossa. It lies immediately medial to the attachment of the acromion to the lateral angle of the scapular spine.
The Suprascapular artery and suprascapular nerve pass around the great scapular notch anteroposteriorly.
Supraspinatus and infraspinatus are both supplied by the suprascapular nerve, which originates from the superior trunk of the brachial plexus (roots C5-C6).