THIGH AND LEG. 



3 Z 3 



longus and sartorius. Contents : (a) The femoral sheath, formed of the iliac fascia 

 behind the vessels, and the transversalis fascia in front of the same. This sheath 

 contains the femoral artery, vein, and femoral canal. (Fig. 212.) (b) The termina- 

 tion of the longsapJienous vein, (c} The external cutaneous nerve of the thigh, which 

 you will find under the anterior superior iliac spine. (//) The spermatic cord in 

 the male, and its homologue, the round ligament, in the female, both of which 

 you will find under the spine of the pubes. (Fig. 224.) (e) The obturator nerve 

 and vessels. (/) The lesser trocJianter of the femur, giving insertion to the iliacus 

 and psoas magnus muscles ; (^) the anterior crural or femoral nerve and its 

 branches ; (/^) the common femoral artery and vein, bifurcating into the profunda 

 and superficial femoral arteries. In this, as in other regions, the student should 

 become so familiar with structures that he can, by the sense of feel alone, say 

 positively what he touches. I remember well a freshman examined the deep 



Obliquus 



interims 



Aponeurosis 

 of obliquuB 



externus 



Spermatic 



cord 



Origin of 

 cremaster 

 Triangular 

 fascia 



Insertion of 

 cremaster 



Loops of 

 cremaster 



Intercolumnar 

 fibres 



FIG. 224. OULIQUUS EXTERNUS AND FASCIA LATA. 



part of Scarpa's triangle, and feeling the lesser trocJianter of the femur, made a 

 diagnosis of osteo-sarcoma ! 



Poupart 's ligament, or crural arch, is the lower part of the aponeurosis of the ex- 

 ternal oblique muscle of the abdominal wall. (Fig. 224.) It extends from the 

 anterior superior iliac spine to the pubic spine. It is continuous below with the 

 fascia lata. (Fig. 212.) It forms the floor of the inguinal canal, upon which 

 floor rest the spermatic cord and round ligament of the uterus, just before they 

 emerge through the external abdominal ring into Scarpa's triangle. 



Hunter s canal (Fig. 219) (i) extends from the apex of Scarpa's triangle to 

 the aperture in the adductor magnus muscle. (Fig. 222.) In other words, it is a 

 groove linking together the popliteal space and Scarpa's triangle. (2) It is 

 bounded externally by the inner part of the vastus internus muscle ; internally by 

 the front surfaces of the adductor longus and adductor magnus muscles. (3) Its 

 roof is the deep fascia passing across from the adductors to the vastus internus. 



It contains : (i) The superficial femoral artery and vein. The vein lies behind 



