600 A MANUAL OF ANATOMY. 



Remove the integument from the lumbar, gluteal, and posterior crural 

 regions. 



To expose the back of the thigh (and for that matter the leg) it will not be 

 necessary to make median and transverse incisions. But reflect the integu- 

 ment from the outer to the inner side of the limb, and from above downward, 

 at this time as far downward as the calf of the leg. Do not cut this large 

 skin flap away but use it for covering the part. 



The Superficial Fascia, Posterior Portion. 



This layer is continuous with the fascia described upon 

 the anterior aspect of the thigh. See page 556. 



Upon the small of the back and over the buttocks, the 

 superficial fascia is usually very thick and consists of very 

 coarse granular adipose tissue. See page 360. 



DISSECTION. 



Remove the superficial fascia from the entire area corresponding to the 

 integument, saving the cutaneous nerves and veins. 



The Fascia Lata, Posterior Portion. 



The posterior portion of the fascia is continuous with the 

 anterior at the sides of the thigh, with the deep fascia of 

 the leg in the popliteal space, and is attached above and 

 below and at the sides, as given on page 558. 



Above, the fascia divides into two laminae between which 

 the gluteus maximus lies, and into the angle of division at 

 the outer side of the thigh it is inserted similar to the tensor 

 vaginae femoris. The external lamina is the stronger, and 

 is attached to the coccyx and the sacrum. The internal 

 layer blends with the outer margin of the great sacrosciatic 

 ligament. The two layers become united at the margins 

 of the gluteus maximus, the external portion then passing 

 over the gluteus medius and being fastened to the crest of 

 the ilium, the internal to the tuberosity of the ischium and 

 the pubic arch. 



The portion of the fascia lata into which the gluteus 



