208 



SPECIAL ANATOMY OF THE SKELETON 



glutaea anterior}, the longest of the three, commences at the crest, about an inch 

 behind its anterior extremity, and, taking a curved direction downward and 

 backward, terminates at the upper part of the great sacrosciatic notch. The 

 space between the superior and middle curved lines and the crest is concave, 

 and affords origin to the Gluteus medius muscle. Near the central part of this 

 line may often be observed the orifice of a nutrient foramen. The inferior curved 



Anterior superior 

 spine. 



Anterior inferior spine, 

 ligament 



GEMELLUS SUPERIOR 



Spine of ischium. 



OEMELLUS INFERIOR. 



REOTU8 A8DOMI 



PYRAMIDALIS. 

 .DDUCTOR LONI 



FIG. 167. Right os innominatum. External surface. 



line (linea glutaea inferior}, the least distinct of the three, commences in front 

 ' at the notch on the anterior border, and, taking a curved direction backward 

 and downward, terminates at the middle of the great sacrosciatic notch. The 

 surface of bone included between the middle and inferior curved lines is concave 

 from above downward, convex from before backward, and affords origin to the 

 Gluteus minimus muscle. Beneath the inferior curved line, and corresponding 



