282 



THE INFERIOR EXTREMITY 



partake of the same characters as the corresponding layer of 



fascia in other parts of 

 the body. It presents, 

 however, certain special 

 peculiarities. It is much 

 more heavily laden with 

 fat more particularly so 

 in the female ; it thickens 

 over the upper and lower 

 margins of the glutaeus 

 maximus, and it becomes 

 tough and stringy over 

 the ischial tuberosity, 

 where it forms a most 

 efficient cushion upon 

 which this bony promin- 

 ence rests while the body 

 is in the sitting posture. 



Nervi Cutanei (Fig. 

 127). The cutaneous 

 nerves of the gluteal 

 region are numerous. 

 Some of them are difficult 

 to find and, if the sub- 

 ject is obese, many of 

 them are so embedded 

 in the fat, at different 

 levels, that a satisfactory 

 display of the whole series 

 is not easily obtained. 

 Therefore the dissector, 

 working upon the buttock 

 for the first time, mnst 

 not be disappointed if the 

 final result of his work 

 does not quite realise his 

 hopes and expectations. 



The nerve twigs dis- 



riG. 127. Cutaneous Nerves on the . 



posterior aspect of the Inferior Extremity, tnbuted to the skin of 



the gluteal region are 



derived from the anterior ramus of the last thoracic and 

 from the anterior and posterior rami of the lumbar and 



Lumbar nerves- 

 Cutaneous branches 

 of the 1 2th thoracic 

 and ilio-hypogastric 

 nerves 



Sacral nerves" 



Perforating 



cutaneous 



Branches from 



posterior cutaneous 



nerve of the thigh 



Lateral cutaneous 



nerve of the thigh" 



Long peririeal 



Posterior cutaneous 

 nerve of the thigh 

 Medial cutaneous 

 nerve of the thigh 



Lateral cutaneous, 

 nerve of the thigh 



Medial cutaneous 

 nerve of the thigh" 



Anastomotic peroneal 

 nerve ' 



Posterior cutaneous nerve 

 of the thigh 



Medial cutaneous nerve of 



the calf (O.T. ramus com- 



municans tibialis) 



Nervus suralis (O.T. short 

 saphenous) 



Medial calcanean nerve 



