53 



APPLIED ANATOMY. 



intertrochanteric line and posteriorly only half way down the neck, the high frac- 

 tures are entirely intracapsular and the low fractures intracapsular in front and 

 extracapsular behind. This causes a marked difference in healing; complete intra- 

 capsular fractures do not unite firmly, but the fractures close to the trochanters 

 not infrequently unite firmly with resulting good function. 



Tensor fascise femoris 



Gluteus medius 



Gluteus minimus 



Rectus femoris 



Crureus 



Vastus internus 



Iliopsoas 



Pectineus 

 Adductor brevis 



Adductor longus 



FIG. 540. Fracture of the femur at the juncture of the upper and middle thirds. Upper fragment drawn forward 



and outward. 



Impaction. Impaction of the other fragment by the neck of the bone is not 

 rare, and firm union may occur. If the fracture is close to the head, the neck is 

 impacted into and penetrates the head, but if the fracture is close to the trochanters 

 the neck penetrates the trochanters, frequently splitting them. 



