132 



LIGAMENTS OF THE PELVIS. 

 Fig. 61.* 



side of the sacrum and coccyx, interlacing its fibres with the greater 

 sacro-ischiatic ligament. 



The anterior sacro-ischiatic ligament is in relation in front with the 

 coccygeus muscle, and behind with the posterior ligament, with which 

 its fibres are intermingled. By its upper border it forms a part of the 

 lower boundary of the great sacro-ischiatic foramen, and by the lower 

 a part of the lesser sacro-ischiatic foramen. 



The posterior or greater sacro~ischiatic ligament, considerably larger, 

 thicker, and more posterior than the preceding, is narrower in the 

 middle than at each extremity. It is attached, by its smaller end, to 

 the inner margin of the tuberosity and ramus of the ischium, where it 

 forms a falciform process, which protects the internal pudic artery, and 

 is continuous with the obturator fascia. By its larger extremity it is 

 inserted into the side of the coccyx, sacrum, and posterior inferior spine 

 of the ilium. 



The posterior sacro-ischiatic ligament is in relation in front with the 

 anterior ligament, and behind with the glutens maximus, to some of 

 the fibres of which it gives origin. By its superior border it forms 



* The ligaments of the pelvis and hip-joint. 1. The lower part of the ante- 

 rior common ligament of the vertebrae, extending downwards over the front of 

 the sacrum. 2. The lumbo-sacral ligament. 3. The lumbo-iliac ligament. 

 4. The anterior sacro-iliac ligaments. 5. The obturator membrane. 6. Pou- 

 part's ligament. 7. Gimbernat's ligament. 8. The capsular ligament of the 

 hip-joint. 9. The ilio-femoral or accessory ligament. 



