332 Anatomy Applied to Medicine and Surgery. 



As it descends it gets behind the superficial femoral, 

 being separated from it, by the veins, above mentioned, 

 and by the adductor 1'ongus. Behind, it rests on the ilia- 

 cus, pectineus, adductor brevis and adductor magnus 

 muscles, while, externally, it is separated from the femur 

 by the vastus internus muscle. 



Landmarks. Landmarks for the femoral artery. 

 With the thigh slightly flexed, abduct and rotate it out- 

 wards. Draw a line from midway between the anterior 

 superior spinous process of the ilium and the symphysis 

 pubis, or, from a point, half an inch internal to the middle 

 of Poupart's ligament, to the adductor tubercle on the in- 

 ternal condyle. Another landmark would be a line drawn 

 from the same point, above, to the inner border of the 

 patella, when the limb is extended, i.e., when parallel with 

 its fellow : the upper two-thirds of either of these lines 

 will represent the situation of the vessel. 



Landmarks for the femoral vein. A line drawn from 

 a point, one-half inch internal to the line of the artery at 

 the level of Poupart's ligament, to blend with the line of 

 the artery about five inches below the ligament. For the 

 long saphenous vein, a line drawn from a point about three- 

 quarters of an inch internal to the line of the artery and 

 about one inch below Poupart's ligament, downwards to 

 a point behind the internal condyle of the femur, thence 

 down the inner aspect of the leg to the dorsum of the foot, 

 crossing the lower end of the tibia about two and a half 

 inches above the tip of the inner malleolus. 



Landmarks for the nerves. Anterior Crural. A short 

 trunk, situated about half an inch external to the femoral 

 artery, immediately below Poupart's ligament. 



Great Sciatic. A line drawn from a point a little in- 

 ternal to the middle of the space between the tuberosity 

 of the ischium and the great trochanter, downwards, to 

 the middle of the popliteal space. 



