184 



INFERIOR EXTREMITY 



funnel-shaped prolongation of the lining. This, then, is the 

 femoral sheath, and the dissector will now readily understand 

 that the anterior wall of the sheath is formed si fascia 

 transversalis from the anterior wall of the abdomen above the 

 inguinal ligament, while the posterior wall is formed of fascia 

 iliaca, prolonged downwards from the posterior abdominal 

 wall. 



Posterior Wall of the Femoral Sheath. There are still 



N. cutaneous 

 femoris lateralis 



M. ilio-psoas 

 Ligamentum 

 inguinale 



A. femoralis 

 Femoral sheath 

 V. femoralis 

 Lig. lacunare 

 Tuberculum pubicum 

 M. pectineus 



FASCIA ILIAC/k 



FlG. 69. Dissection to show the Femoral Sheath and the other Structures 

 which pass between the Inguinal Ligament and the Innominate Bone. 



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 this 

 enters the thigh it blends with the fascia pectinea, and further, 

 it is firmly fixed in position by certain connections which 

 it establishes in the thigh. Thus beyond the femoral 

 sheath it is prolonged laterally over the ilio-psoas muscle, 

 whilst from its posterior aspect a lamina is given off which 

 passes posterior to that muscle and joins the capsule of the 

 hip- jo int. 



