704 LIGAMENTS OF THE ARM. 



Between these two ligaments fatty and cellular structures 

 are seen, and occasionally a small bursa. 



FlG 221 The ligamentumbicorne, called also 



the clavicular fascia, springs from 

 the root of the coracoid process and 

 divides, whence it receives the name 

 of the bifid ligament. One of the 

 divisions goes to the first rib, the 

 other spreads over the suhclavius 

 I ^ muscle as a fascia, and extends as far 

 forward as the rhomboid ligament. 

 The ligaments of the scapula are 

 the coracoid and the triangular. 

 (Fig. 221.) 



The coracoid is posterior, and is 

 stretched across the notch in the 

 superior costa of the scapula, converting it into a foramen. 

 The triangular is anterior, and is also called deltoid or 

 coraco-acromial. It has a broad origin from the superior 

 margin of the coracoid process. Its fibres, which are thin 

 and partially separated, converge, become thicker, and are 

 inserted into the acromion process where it joins the clavi- 

 cle. This ligament forms an arch over the shoulder joint, 

 and is covered by the deltoid muscle. 



LIGAMENTS OF THE ARM. 



The Jiumero-scapular articulation contains the following 

 ligaments : 1st, The capsular ligament (Fig. 221) ; 2d ; 

 The coraco-humeral ; 3d, The glenoid. 



The capsular ligament completely surrounds this joint, 

 being attached above to the margin of the glenoid cavity, 

 and below to the neck of the humerus. Above and below 

 it is dense internally, and externally it is thin. It is loose 

 and has connected with it the tendons of the four capsular 



FIG. 221 represents the Ligaments of the Shoulder Joint. 1 Superior acro- 

 mio clavicular ligament. 2 Coraco-clavicular ligament. 3 Coraco-acromial 

 ligament. 4 Coracoid ligament. 5 Capsular ligament. 6 Coraco-humeral, 

 or ligamentum adscititium. 7 Tendon of the long head of the biceps muscle. 



