Scapula a triangular flat bone ·Three borders Superior:coracoid process, scapular notch Lateral (axillary)border Medial (vertebral)border ·Three angles Superior:opposite to the 2nd rib -Inferior:opposite to the 7th rib/intercostals space Lateral:glenoid cavity supra-and infraglenoid tubercles ·Two surfaces Anterior surface concave: subscapular fossa -Posterior surface: supra-and infraspinous fossae spine of scapula,acromionScapula • Three borders – Superior: coracoid process , scapular notch – Lateral (axillary) border – Medial (vertebral) border • Three angles – Superior: opposite to the 2nd rib – Inferior: opposite to the 7th rib / intercostals space – Lateral: glenoid cavity supra- and infraglenoid tubercles • Two surfaces – Anterior surface concave: subscapular fossa – Posterior surface: supra- and infraspinous fossae spine of scapula, acromion a triangular flat bone