52 THE POCKET ANATOMY 



septum(AF) common extensor tendon, and slip to outer side 

 ofpatella(x) (Anterior crural). 



Vastus internus : inner lip of linea aspera, lower part of 

 spiral line, tendons of adductores longus and magnus(TA) 

 common tendon and inner side of patella(x) (Anterior crural). 



Crureus : upper anterior and outer surfaces of shaft of 

 femur, lower half external intermuscular septum(p) common 

 tendon (A) (Anterior crural). 



Rectus femoris : ist head. Anterior inferior iliac spine(x). 

 2nd head. Groove above acetabulum(T) common extensor 

 tendon into upper border of patella(x) (Anterior crural). 



THE COMMON EXXENSOR XENDON is inserted into the upper 

 and lateral edges of the patella, very few fibres being prolonged 

 over bone to help form the ligamentum patellae. [Extends 

 knee ; rectus also flexes hip.] 



Subcrureus : two slips from anterior surface of shaft of 

 femur in lower fourth(p) synovial sac of knee-joint(F) (An- 

 terior crural). [Pulls up synovial expansion of knee-joint in 

 extension.] 



INXERNAL FEMORAL REGION. 



Gracilis : internal margin of anterior surface of descending 

 pubic ramus inner side of tibia superior to semi-tendinosus, 

 but inferior to backward prolongation of insertion of sartorius 

 (x) (Anterior branch of obturator). [Adducts thigh, flexes 

 knee.] 



Pectineus : ilio-pectineal line and triangular surface anterioi 

 to it(p) posterior to small trochanter and upper half of line 

 leading from it to linea aspera(x) (Anterior crural, and Acces- 

 sory obturator or Obturator). [Adducts thigh, flexes hip, 

 rotates thigh out.] 



Adductor longus : anterior surface of pubes below angle 

 of crest and symphysis(x) inner lip of linea aspera(F) 

 (Anterior division of obturator). [Adducts thigh, flexes hip, 

 rotates thigh out.] Forms internal boundary of Scarpa's triangle. 



Adductor brevis : body and ramus of pubis, extending from 

 adductor longus to middle of ramus(FA) behind pectineus 

 into line leading from small trochanter to linea aspera(r) 

 (Obturator, generally anterior branch). [Adducts thigh, 

 flexes hip, rotates thigh out.] Anterior division of obturatornerve 

 placed in front and posterior part behind, the internal circumflex 

 artery between upper border and obturator externus. 



Adductor magnus : pubic arch, from body of pubis to tuber 

 ischii(A) Anterior part. Line from great trochanter to linea 

 aspera, inner lip of linea aspera, upper half of line leading 



