SECTION XI 

 THE BLOODVESSELS OF THE LOWER LIMB 



Arteries of the Lower Limb. 



THE blood-supply of the lower limb is derived from the con- 

 tinuation of the external iliac artery, which, passing under 

 Poupart's ligament, changes its name and becomes the femoral 

 artery, which passes from the lower border of Poupart's liga- 

 ment to the opening in the insertion of adductor magnus. 



The Femoral artery passes through Scarpa's triangle, then 

 enters Hunter's canal. 



Scarpa's triangle is a muscular space situated in the upper 

 anterior portion of the thigh : it is triangular with the apex 

 downwards ; the base is formed by Poupart's ligament, the outer 

 side by sartorius, the inner side by adductor longus ; in the 

 floor are seen ilio-psoas, pectineus and adductor brevis ; the con- 

 tents are femoral artery and vein, anterior crural nerve, and 

 lymph glands. 



In Scarpa's triangle it lies on, successively, posterior part of 

 femoral sheath, pubic portion of fascia lata, psoas, pectineus, 

 adductor longus (upper part), and is covered by skin and fascia, 

 superficial glands and vessels. On the outer side of the artery 

 above lies the anterior crural nerve, and lower down the internal 

 ;saphenous nerve. 



The femoral vein lies behind the artery in the lower part of 

 "Scarpa's triangle, passes to its inner side above, and is separated 

 from the artery by the outer septum of the femoral sheath. 



Hunter's canal is a potential space between the adductor 

 muscles and vastus internus, covered by sartorius ; the contents 

 are the femoral artery and vein, and long saphenous nerve. 



In Hunter's canal the artery lies on, successively, adductor 



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