THE LOWER LIMB 



459 



feriorly this border is continuous with the inferior cornu. Superiorly 

 it curves inwards over the anterior wall of the crural sheath. The 

 whole border is concave or semilunar, the concavity being directed 

 inwards and shghtly downwards. The upper border is the portion 

 in front of the anterior wall of the crural sheath, and it lies immedi- 

 ately below Poupart's hgament. It is called the superior cornu. 



Superficial Circumflex Iliac Artery 

 Superfidal Circumflex Iliac Vein 



Superficial Episastric Vessels , y 



Femoral Vein 



Falciform Process of Bums 

 and Superior Cornu ^. 



Internal Saphenous Veinv^ ' 



Superior External Pudic VesseU 



Inferior Cornu of Saphenous Opening -'' 

 Posterior Saphenous Vein — 

 Anterior S iphenous Vein — 



Internal Saphenous Vein - ^ 

 (In this case double) f 



mu-^^m 



F"iG. 227. — The Left Internal Saphenous Vein in the Thigh, with its 

 Tributaries, and the Saphenous Opening. 



It is triangular, and is continuous with the outer border. Superiorly 

 it is attached to the inner part of Poupart's ligament, extending 

 inwards as far as the pubic spine, and a few of its fibres join the 

 antero- inferior or femoral surface of Gimbemat's hgament. The 

 inner portion of the superior cornu is internal to the femoral vein, 

 and lies in front of the crural canal. It is this portion, inside the 



