188 



Termination 

 of internal 

 cutaneous. 



Take away 

 the fat. ' 



Deep fascia : 



continuity 



and attach- 

 ments. 



Take away 

 the fascia. 



Muscles in 

 superficial 

 group. 



DISSECTION OF THE LEG. 



OFFSET OF THE INTERNAL CUTANEOUS (fig. 71, 8 ). The posterior 

 branch of the internal cutaneous of the thigh (p. 141) extends to 



the middle of the leg, and communi- 

 cates with the internal saphenous 

 nerve. 



Dissection. The deep fascia will 

 he exposed by removal of the fat, and 

 the superficial vessels and nerves may 

 be either cut or turned aside. 



The DEEP FASCIA on the posterior 

 aspect of the leg covers the muscles, 

 and sends a thick process between the 

 deep and superficial groups. Above, 

 it is continuous with the investing 

 membrane of the thigh, and receives 

 offsets from the tendons about the 

 knee ; and below, it joins the annular 

 ligaments. Internally, it is fixed to 

 the edge of the tibia : externally, it is 

 continued uninterruptedly from the 

 one aspect of the limb to the other ; 

 but from its deep surface an inter- 

 muscular septum is sent inwards 

 between the muscles of the back and 

 those of the outer side of the leg to be 

 attached to the outer border of the 

 fibula. Veins are transmitted through 

 it from the deep to the superficial 

 vessels. 



Dissection. The fascia is to be 

 divided along the centre of the leg 

 as far as the heel, and is to be taken 

 from the surface of the gastrocnemius 

 muscle. By fixing with a stitch the 

 cut inner head of the gastrocnemius, 

 the fibres of the muscle will be more 

 easily cleaned. 



SUPERFICIAL GROUP OF MUSCLES. 

 In the calf of the leg there are three 



FIG. 71. FIRST VIEW OP THE BACK OF THE LEG (ILLUSTRATIONS 

 OF DISSECTIONS). 



Muscles : 



A. Grastrocneiuius. 



B. Soleus. 



c. Scraimembranosus. 

 D. Biceps. 



Vessels : 



a. Popliteal artery. 



b. Internal saphenous vein. 



c. External saphenous vein. 



Nerves : 



1. External popliteal. 



2. Internal popliteal. 



3. Tibial communicating. 



4. Peroneal communicating. 



5. External, or short, saphenous. 



6. Small sciatic. 



7. Internal saphenous. 



8. Internal cutaneous. 



