THE MUSCLES OF THE LEG AND FOOT 



287 



IV. THE MUSCLES OF THE LEG AND FOOT 



The muscles of this region cover ahiiost all of the tibia except its internal face, 

 which is largely subcutaneous. As in the forearm, the muscles fall into two groups, 



/ 



0' 



Patella - - 



Crest of tibia 



Anterior or long extensor- 

 Lateral extensor ■ 



Proximal annular ligament 

 External malleolus 



Middle annidcir ligament 



Distal annular ligament 



Tendon of anterior extensor 



Tendon of lateral extensor 



Branch of suspensory ligament to 

 extensor tendon 



' Gastrocnemiiis, external head 



' Soleus 



lW Tendon of gastrocnemius 



■ Tarsal tendon of biceps femoris 

 - - Deep flexor 



'-- Superficial 

 ^'' flexor tendon 



Superficial flexor 

 tendon 



Deep flexor tendon 



Suspensory 

 ligament 



I Fig. 201.— Muscles of Lower Part of Thigh, Leg, and Foot of Horse, External View. 



I o', Fascia lata; q, q' , q" , biceps femoris; r, semitendinosus; SI', external condyle of tibia. (After EUenberger- 



' Baum, Anat. fiir Kiinstler.) 



( an anterior or dorso-lateral, and a posterior or plantar. The muscles of the first 

 ' group are extensors of the digit and flexors of the hock, those of the second have the 

 opposite action. 



