THE STERXO-CLAVICULAR ARTICULATION. 



713 



and an interarticular fibro- cartilage is placed between them. They is a com- 

 are united by a capsular ligament ; and the clavicle receives addi- p< 

 tional support from a ligament passing to the first rib-cartilage, and 

 from another band connecting it to the bone of the opposite side. 



Dissection. For the examination of the ligaments of the sterno- Dissection, 

 clavicular articulation, take the piece of the bones that have been 

 set aside. If the ligaments have become dry, they may be moistened 

 for a short time. The several ligaments will be seen in the situation 

 indicated bv their names, after the removal of some connective tissue. 



FIG. 256. LIGAMENTS OF THK INNER END OF THE CLAVICLE, AND OF THE 

 CARTILAGE OF THE SECOND RIB. 



1. Capsule. 



2. Costo- clavicular ligament. 



3. Interclavicular ligament. 



4. Anterior ligament of the second 

 chondro-sternal articulation. 



6. Interarticular ligament of the 

 same joint. 



7. Interarticular fibre-cartilage be- 

 tween the sternum and clavicle. 



The capsular ligament (fig. 256, ') is a stout membrane surrounding Fibrous 

 the articular portions of the bones and the fibro-cartilage. Its fibres 

 run obliquely from the clavicle downwards and inwards to the 

 sternum. The stronger parts in front and behind are described as 

 the anterior and posterior sterno-clavicular ligaments. 



The interdaricular ligament (fig. 256, 3 ) extends above the sternum, 

 between the ends of the clavicles. The fibres dip into the hollow 

 between the collar-bones, and are connected with the upper edge of 

 the sternum. 



The costo-davicular or rhomboid ligament (fig. 256, 2 ) is a short and costo 

 strong band of oblique fibres, passing from the upper surface of the 



inter- 

 clavicular 



