THE THIGH 241 



iliac vessels (which become the femoral vessels in the' thigh), 

 with the lumbo-inguinal nerve, lie anterior to the fascia iliaca, 

 or, in other words, within the fascial lining of the abdomen, 

 and, as they proceed distally behind the inguinal ligament, 

 they carry with them a funnel-shaped prolongation of the 

 lining, which is the femoral sheath. 



The dissector will now readily understand that the anterior 

 wall of the sheath is formed of fascia transversalis from 



N. cutaneus 

 femoris lateralis 



M. ilio-psoas 

 Ligamentum 

 inguinale 



A. femoralis 

 Femoral sheath 

 V. femoralis 

 Lig. lacunare 

 Tuberculum pubicum 

 M. pectineus 



FIG. in. Dissection to show the Femoral Sheath and the other Structures 

 which pass between the Inguinal Ligament and the Hip Bone. 



the anterior wall of the abdomen, while the posterior wall is 

 formed of fascia iliaca, prolonged distally, from the posterior 

 abdominal wall (Fig. no). 



Posterior Wall of the Femoral Sheath. There are still 

 some additional facts relating to the posterior wall of the 

 femoral sheath which require to be mentioned. It is 

 formed, as stated above, by the fascia iliaca; but as that 

 enters the thigh it blends with the lateral part of the (Fig. 113) 

 fascia pectinea, and further, it is firmly fixed in position by 

 certain connections which it establishes in the thigh. Thus, 



VOL. i 16 



