240 



APPLIED ANATOMY. 



1 



Lesser tuberosity of the humerus 

 Relaxed tendon of coracobrachialis 

 and short head of biceps 



FIG. 254. Raising the arm to a vertical line or a little more relaxes the tendon of the coracobrachialis 

 and short head of the biceps muscle and allows the lesser tuberosity of the humerus to pass beneath it when the 

 arm is rotated inward to place the hand on the opposite shoulder. 





Prominence formed by 

 the head of the humerus" 



* 



FIG. 255. Posterior luxation of the shoulder. The head of the humerus makes a prominence beneath tne 

 spine of the scapula and the arm is rotated inward. (From a photograph of author's patient by Dr. A. P. C. 



Ashhurst.) 



