THE INFERIOR EXTREMITY 



M. sernimembranosus 



M. soleus 



u 



Iff JE 



I 



Groove for tibialis 

 sterior 



laciniatum to reach the in- 

 tegument of the heel and sole 

 of the foot ; and (c) articular 

 filaments to the ankle joint. 



Deep Muscles. The pop- 

 liteus muscle will be seen lying 

 upon the posterior aspect of 

 the knee joint and upon the 

 posterior surface of the tibia 

 proximal to the linea poplitea. 

 Its tendon of origin lies within 

 the capsule of the knee joint, 

 and cannot be properly 

 studied until that articula- 

 tion is dissected. 



Note the strong fascia which 

 covers the posterior surface of the 

 popliteus, and trace it proximally 

 and medially to the medial side of 

 the knee. There it becomes con- 

 tinuous with the tendon of the 

 semimembranosus, and through it, 

 therefore, the semimembranosus 

 may be regarded as having an in- 

 sertion into the linea poplitea of the 

 tibia. 



The flexor hallucis longus 

 is placed upon the posterior 

 aspect of the fibula, and its 

 tendon will be noticed groov- 

 ing the posterior border of 

 the talus as it passes distally 

 and forwards to gain the sole 

 of the foot. The flexor digi- 

 torum longus lies upon the tibia. 

 The tibialis posterior rests upon 

 the interosseous membrane 

 and between the fleshy bellies 

 of the two flexors but upon a 

 of deeper plane. 



M. Popliteus. The pop- 

 liteus muscle arises by a stout 

 narrow tendon, within the capsule of the knee joint, from the 



posterior 

 Groove for flexor hallucis longus 



FIG. 1 66. Posterior aspect 

 Bones of Leg with Attach- 

 ments of Muscles mapped out. 



