ARTICULATION OF VERTEBRAL COLUMN WITH THE PELVIS 289 



The anterior intersternal ligament consists of a layer of fibres, having a longi- 

 tudinal direction; it blends with the fibres of the anterior chondrosternal liga- 

 ments on both sides, and with the tendinous fibres of origin of the Pectoralis 

 major muscle. This ligament is rough, irrr gular, and much thicker below than 

 above. 



The posterior intersternal ligament is disposed in a somewhat similar manner 

 on the posterior surface of the articulation. 



IX. Articulation of the Vertebral Column with the Pelvis. 



The ligaments connecting the last lumbar vertebra with the sacrum are similar 

 to those which connect the segments of the vertebral column with each other viz. : 

 (1) The continuation downward of the anterior and posterior common liga- 

 ments. (2) The intervertebral substance connecting the flattened oval surfaces 

 of the two bones and forming an amphiarthrodial joint. (3) Ligamenta subflava, 

 connecting the arch of the last lumbar vertebra with the posterior border of the 

 sacral canal. (4) Capsular ligaments connecting the articulating processes and 

 forming a double arthrodia. (5) Inter- and supraspinous ligaments. 



al aperture of 

 ication with 

 PSOAS and ILIAC us 



Femur. 



FIG. 238. Articulations of the pelvis and hip. Anterior view. 



* 



The two proper ligaments connecting the pelvis with the vertebral column are 

 the lumbosacral and iliolumbar. 



The lumbosacral ligament (Fig. 238) is a short, thick, triangular fasciculus, 

 which is connected above to the lower and front part of the transverse process 

 of the last lumbar vertebra; it passes obliquely outward and is attached below 

 to the lateral surface of the base of the sacrum. It is closely blended with the 

 anterior sacroiliac and the iliolumbar ligaments, and is to be regarded as a portion 



19 



