THE SCAPULA 



205 



formed partly by the base of the coracoid process. This notch is converted into 

 a foramen by the superior transverse ligament, and serves for the" passage of the 

 suprascapular nerve; sometimes the ligament is ossified. The adjacent part of 

 the superior border affords attachment to the Omohyoideus. The axillary border 



Coracohumeral 

 ligament 



Coraco-acromial ligament 



Trapezoid ligament 





FIQ. 203. Left scapula. Dorsal surface. 



is the thickest of the three. It begins above at the lower margin of the glenoid 

 cavity, and inclines obliquely downward and backward to the inferior angle. 

 Immediately below the glenoid cavity is a rough impression, the infraglenoid 

 tuberosity, about 2.5 cm. in length, which gives origin to the long head of the Tri- 

 ceps brachii; in front of this is a longitudinal groove, which extends as far as the 



