3 J 4 



THE INFERIOR EXTREMITY 



and laterally along the medial border of the biceps femoris, 

 it leaves the fossa at its lateral angle, where it crosses the 

 plantaris and the lateral head of the gastrocnemius ; then it 

 passes behind the head of the fibula, from which it is 



M. semitendinosus 



M. semimembranosus 



M. biceps femoris 



Tibial nerve (O.T. 

 int. popliteal) 



Origin of the peroneal 

 anastomotic nerve 



M. plantaris 



Common peroneal 



nerve (O.T. 



ext. popliteal) 



Soleus 



Lateral head of 



gastrocnemius 



(cut across) 



Medial cutaneous 



nerve of the calf 



(O.T. ramus com- 



municans tibialis) 



| Superficial fascia 

 Deep fascia 



M. gracilis 

 _ M. sartorius 



Superior medial 

 "genicular artery 



-Popliteal vessels 



Bursa between 

 capsule of knee and 

 'tendon of semi- 

 membranosus 



M. semimembranosus 



_ Oblique popliteal 

 ligament 



Inferior medial 

 genicular artery 



M. semitendinosus 

 (tendon of) 



.Great saphenous vein 

 M. popliteus 



Medial head of 

 M. gastrocnemius 

 (cut across) 



Deep fascia 



~~ Small saphenous 

 vein 



FIG. 134. Popliteal Fossa. The two heads of the gastrocnemius and portions 

 of the semimembranosus and semitendinosus have been removed so as to 

 display more fully the contents of the fossa. 



separated by the upper part of the soleus ; finally it turns 

 forwards, to its termination, between the lateral side of the 

 neck of the fibula and the proximal part of the origin of 

 the peroneus longus. It gives off two cutaneous and three 

 articular branches. 



The cutaneous branches are two in number, viz., the anasto- 



