34 THE POCKET ANATOMY 



and outer heads): capsular, coraco - acromial, humeral, 

 clavicular, costo-coracoid (external part) ligaments ; coracoid 

 process : acromio-thoracic, supra-scapular, branch of superior 

 profunda, and circumflex vessels ; circumflex nerve. 



ANTERIOR SCAPULAR REGION. 



Subscapularis : all subscapular fossa, except at neck, angles, 

 and inner border(p T A) small tuberosity of humerus(T) and 

 neck of humerus for one inch below(F) (Short subscapular 

 and branch from lower subscapular). [Flexes and inwardly 

 rotates shoulder-joint.] Bursa placed between the tendon and root 

 of coracoid process, communicating with shoulder-joint. 



POSTERIOR SCAPULAR REGION. 



Supra-spinatus : supra-spinous fossa, except near neck of 

 scapula ; upper surface of spine, and fascia covering muscle(F) 

 upper of three facets upon great tuberosity of humerus(T) 

 (Supra-scapular). [Abducts humerus.] 



Infra-spinatus : infra-spinous fossa, except at neck, axillary 

 border, and inferior angle ; from inferior surface of spine of 

 scapula, and fascia covering muscle(F) middle of three facets 

 on great tuberosity of humerus(T) (Suprascapular). [Extends 

 and externally rotates shoulder-joint.] 



Teres minor : from superior of axillary border of dorsum 

 of scapula, its investing fascia(p) lowest of three facets upon 

 great tuberosity of humerus(T), and bone below(p) (Circum- 

 flex ; has a gangliform swelling on it}. [Adducts and externally 

 rotates humerus.] Dorsal branch of subscapular artery bends 

 backwards in front of this muscle to reach infra-spinous fossa. 



Teres major : from rough surface at inferior angle of dorsum 

 of scapula, and axillary border for lower ^, septum between it 

 and teres minor(p) inner edge of bicipital groove of humerus 

 (T) (Lower subscapular). [Adducts and internally rotates 

 humerus.] A bursa is sometimes placed between tendon and humerus 

 posteriorly , and between ten don and latissimus dor si insertion an teriorly . 



ANTERIOR HUMERAL REGION. 



The deep fascia of the arm is continuous with that of the 

 shoulder, investing the muscles of this region. It gives off 

 on either side an intermuscular septum, which is attached to 

 the^condyle and supra-condylar ridge. 



Coraco -brachialis: apex of coracoid process of scapula, 

 tendon of coracoid head of biceps(F) rough ridge near middle 



