THE MUSCLES OF THE LEG AND FOOT 



287 



IV. THE MUSCLES OF THE LEG AND FOOT 

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

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



Patella 



Crest of tibia 



Anterior or long extensor 



Lateral extensor 



Proximal annular 

 External 



Middle annular ligament 



Distal annular ligament 



Tendon of anterior extensor 



Tendon of lateral extensor — 



Branch of suspensori/ ligament to 

 extensor tendon 



Gastrocnemius, external head 



Salens 



Tendon of gastrocnemius 

 Tarsal tendon of biceps femoris 

 Deep flexor 



~~~~ Superficial 

 ^'' flexor tendon 



Superficial flexor 

 tendon 



Deep flexor tendon 



Suspensory 

 ~ ligament 



Fig. 201. — Muscles of Lower P.^rt ok Thigh, Leg, and Foot of Horse, External View. 

 o', Fascia lata; q, q' , q", biceps femoris; r, semitendinosus; 21', external condyle of tibia. (After Ellenberger- 



Baum, Anat. fur 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. 



