144 ARTHROLOGY. 



the spines of the sacrum to the posterior spine of the ilium. The 

 lateral sacro-iliac is triangular, the fibres running obliqueljr 



Fig. 59. 

 Sacral and peMc ligaments— left lateral aspect, a, Superior sacro-iliac liga- 

 ment ; h, Sacral ligament ; c, Lateral sacra-iliac ligament ; d, Sacro-sciatic 

 ligament. 



backwards, and it is attached above to the posterior spine and 

 border of the ilium, below to the lateral border of the sacrum. 

 Sacro-sciatic Ligament — This is a broad membranous expan- 



Fia. 60. 



Sacral and pelvic ligaments— inferior aspect, a. Intertransverse 

 lumbar ligament ; b and c. Capsular ligaments of lumbar and sacro- 

 lumbar transverse articulations ; d, Inferior sacro-iliac ligament ; e. 

 Obturator ligament ; //, Ligament of the ischio-pubic symphysis. 



sion situated at the side of the pelvis, helping to form the pelvic 

 cavity. It is attached superiorly to the lateral borders of the 

 transverse processes of the sacrum and first two or three coccygeal 



