i 7 6 



INFERIOR EXTREMITY 



the knee, and its terminal branches turn anteriorly and later- 

 ally to the anterior aspect 

 of the patella. The pos- 

 terior division reaches the 

 surface on the medial side 

 of the knee, posterior to 

 the great saphenous vein, 

 and proceeds distally to 

 supply the integument on 

 the medial side of the 

 proximal part of the leg. 

 But the main stem of the 

 medial cutaneous nerve, 

 before it divides, likewise 

 sends a few twigs through 

 the fascia lata to reach the 

 skin on the proximal and 

 medial aspect of the thigh. 

 These make their appear- 

 ance along the line of the 

 great saphenous vein. 



N. Saphenus (O.T. Long 

 Saphenous). The saphen- 

 ous nerve becomes cutaneous 

 on the medial side of the 

 knee by perforating the 

 fascia between the tendons 

 of the sartorius and gracilis 

 muscles. The guide to it 

 is the saphenous branch 

 of the a. genu suprema, 

 which descends alongside 

 of it. It follows the course 

 of the great saphenous vein 

 into the leg. Before it 

 pierces the fascia it gives 

 off an infrapatellar branch. 



The infrapatellar branch 



N. cutaneus femoris 

 lateralis 



N. ilio-inguinalis 

 N. lumboinguinalis 



Branch from 



medial cutaneous 



of the thigh 



Intermediate cuta- 

 neous of the thigh" 



Medial cutaneous__ 

 of the thigh 



V. saphena magna- 



Anterior part of 



medial cutaneous. 



of the thigh 



Ramus infrapatellaris 

 of n. saphenus" 



V. saphena magna- 



N. saphenus 



N. peronaeus 



superficialis. 



(O.T. musculo- 



cutaneous) 



N. peronseus 

 profundus (O.T. 

 ant. tibia!)' 



FIG. 66. Cutaneous Nerves on the Front 

 of the Lower Extremity. 



pierces the sartorius muscle 

 and the fascia lata on the medial side of the knee, and turns 

 laterally towards the anterior aspect of the joint, below the 

 level of the patella. 



