Muscles of the Lower Extremity. 



193 





M. sartor ius arises from the an- - . . 



Spina' 

 anter. 



tenor superior spine of the ilium, super. 

 and is inserted into and below the 

 tuberosity of the tibia. (Adductor 

 of the extremity, flexor and then 

 rotator inwards of the leg.) 



M. extensor cruris quadriceps. Ori- 

 gins: a) Caput longum s. 'M. rectus 

 cruris (femoris) by two tendons from 

 the anterior inferior spine of the ilium 

 and the groove above the brim of the 

 acetabulum ; b) Caput externum s. M. 

 vastus externus from the base of the 

 great trochanter and from the outer 

 lip of the Linea aspera ; c) Caput 

 internum s. M. vastus interims from 

 the inner lip of the Linea aspera; 

 d) Caput medium s. M. vastus medius 

 s. M. crureus (s. Fig. 262) from 

 the anterior intertrochanteric line 

 and the anterior surface of the 

 femur. Insert. : By a common 

 tendon into the patella and by 

 means of the Ligamentum patellae 

 proprium into the tuberosity of 

 the tibia. 



Musculi subcrurcdes (not illustra- 

 ted), are thin bands of muscular fibres, 

 which run from the lower third 

 of the anterior surface of the femur 

 to the capsule of the knee-joint; 

 they stretch this capsule. 



Heitzmann, Atlas. I. 



259. The Muscles at the 

 Front of the Thigh. 



25 



