THE ARTICULATIONS. 



FIG. 32. 



Describe the Sacro-vertebral Articulation. It is similar to the other ver- 

 tebral articulations, but has 2 additional ligaments on each side, viz. 



Lunibo-sacral, from the transverse processes of the 5th lumbar vertebra to 



the base of the sacrum laterally and anteriorly. 

 Lumbo-iliac, from the apices of the transverse processes of the 5th lumbar 



vertebra to the crest of the ilium. 



Describe the Sacro-coccygeal Articulation. It is an amphiarthrodial joint, 

 and has 3 ligaments, viz. 



Anterior Sacro-coccygeal. Posterior Sacro-coccygeal. 



Interarticular Fibro-cartilage, in the joint. 



Describe the Sacro-iliac Articulation. It is an amphiarthrodial joint, 

 formed by the auricular surfaces of the sacrum and ilium. Its ligaments on 

 each side are as follows, viz. 



Anterior Sacro-iliac. Posterior Sacro-iliac . 



Oblique Sacro-iliac. 



Describe the Sacro-ischiatic Articulation. Its ligaments convert the 

 sacro-sciatic notches into foramina, the greater notch by the lesser ligament, 

 the lesser notch by the 

 greater ligament. These 

 foramina are described 

 under the ilium and is- 

 chiuin bones. 



Great S acr o- sciatic 

 Ligament, 13 w from 

 the posterior inferior 

 spine of the ilium 

 and the posterior sur- 

 faces and margins of 

 the sacrum and coc- 

 cyx, to the inner 

 margin of the tuber- 

 osity and the ascend- 

 ing ramus of the 

 ischium. 

 Lesser Sacro-sciatic Ligament}* 16 from the margins of the sacrum and coccyx, 



into the spine of the ischium. 



Describe the Pubic Articulation. It is an amphiarthrodial joint, formed by 

 the 2 pubic bones. It has an interarticular fibro- cartilage and 4 ligaments, viz. 

 Anterior Pubic. Posterior Pubic. Supra-pubic. 



Sub-pubic, forming a fibrous arch between the rami. 



