Joints of the Thorax. 



173 



Ligamentum colli costae 



Ligamentum tuberculi costae 



Tuberculum costae 



Ligamentum capituli costae 

 radiatum 



Ligamentum longitudinale^anterius 

 Corpus vertebrae 



225. Ribs and corresponding vertebra with 



ligaments, from above. 



(The body of the upper of the two vertebrae connected with the rib has been sawed through 

 transversely. On the right side the joint slits have been opened.) 



The following strengthening ligaments of the articulationes costotransver- 

 sariae have yet to be considered: the lig amentum tuberculi costae, which extends 

 as a quadrangular ligament behind the joint from the tip of the processus trans versus 

 to the posterior surface of the tuberculum costae (see also Fig. 224), as well as the 

 lig amentum colli costae. The latter is short, broad, and stretched out horizontally 

 between the posterior surface of the collum costae and the anterior surface of the pro- 

 cessus transversus of the corresponding vertebra. The fibres run obliquely backward and 

 medianward from the rib. This ligament fills the space between the anterior surface of the 

 processus transversus and the posterior surface of the collum costae, the foramen costo- 

 transversarium, almost completely except for chinks in the anterior and posterior part. 



The eleventh and twelfth rib do not touch the processus transversus of the vertebrae 

 concerned, and their articulationes costotransversariae lock joint cavity and capsula arti- 

 cularis; corresponding to this the two ligaments of each of these joints are somewhat 

 modified. 



