512 



THE MUSCLES AND FASCIA. 



which separates it from the femoral vessels and internal saphenous vein ; by its 

 posterior surface, with the capsular ligament of the hip-joint, the Adductor brevis 



and Obturator externus muscles, the obtura- 

 tor vessels and nerve being interposed ; by 

 its outer border, with the Psoas, a cellular 

 interval separating them, through which 

 passes the internal circumflex vessels ; by 

 its inner border, with the margin of the 

 Adductor longus. 



The Adductor longus, the most super- 

 ficial of the three Adductors, is a flat tri- 

 angular muscle lying on the same plane as 

 the Pectineus. It arises, by a flat narrow 

 tendon, from the front of the os pubis, at 

 the angle of junction of the crest with the 

 symphysis ; and soon expands into a broad 

 fleshy belly, which, passing downward, back- 

 ward, and outward, is inserted, by an apo- 

 neurosis, into the linea aspera, between the 

 Vastus internus and the Adductor magnus, 

 with which it is usually blended. 



Relations. By its anterior surface, with 

 the fascia lata, the Sartorius, and, near its 

 insertion, with the femoral artery and 

 vein ; by its posterior surface, with the 

 Adductor brevis and magnus, the anterior 

 branches of the obturator nerve, and with 

 the profunda artery and vein near its inser- 

 tion ; by its outer border, with the Pecti- 

 neus ; by its inner border, with the Gracilis. 



The Pectineus and Adductor longus should 

 now be divided near their origin, and turned down- 

 ward, when the Adductor brevis and Obturator ex- 

 ternus will be exposed. 



The Adductor brevis is situated im- 

 mediately behind the two preceding mus- 

 cles. It is somewhat triangular in form, 

 and afises by a narrow origin from the 

 outer surface of the body and descending 

 ramus of the os pubis, between the Gracilis 

 and Obturator externus. Its fibres, passing 

 backward, outward, and downward, are in- 

 serted, by an aponeurosis, into the lower 

 part of the line leading from the lesser 

 trochanter to the linea aspera and the upper 

 part of the linea aspera, immediately behind 

 the Pectineus and upper part of the Adduc- 

 tor longus. 



Relations. By its anterior surface, with 

 the Pectineus, Adductor longus, profunda 

 femoris artery, and anterior branches of 

 the obturator nerve ; by its posterior sur- 



Fio.327.-Deep muscles of the internal femoral face, with the Adductor magnus and 

 region. ' . 



posterior branch of the obturator nerve ; 



by its outer border, with the Obturator externus and conjoined tendon of the 

 Psoas and Iliacus ; by its inner border, with the Gracilis and Adductor magnus. 



