112 



THE BONES OF THE LOWER LIMB. 



which lodges the ilio-psoas muscle as it passes froji the abdomen into the thigh. 

 The inner boundary of the groove is formed by an elevation, the ilio-pectineal emi- 

 nence, marking the place of junction of the pubis and ilium. 



PUBIS 



ISCHIUM 

 Fig. 123. RIGHT HIP-BONS OF MALE : INNER VIEW. (Dra vn by T. W. P. Lawrence.) 



The posterior part (sacral surface) is again subdivided, presenting from below up- 

 wards 1, a smooth surface entering into the formation of the true pelvis, and 

 continuous with the pelvic surfaces of the pubis and ischium, only a faint line indi- 

 cating in the adult the place of union ; this gives origin to a part of the obturator 

 internus muscle, and is separated from the iliac fossa by a smooth rounded border, the 

 iliac portion of the ilio-pectineal line ; 2, the uneven auricular surface, in the recent 

 state covered with cartilage, for articulation with the sacrum, broad in front, and 



