Muscles of the Lower Extremity 



203 



Tendines 



Tendo 



'csr 



272. The Muscles on the 

 Dorsal Side of the Foot. 



273. The Muscles on the 

 Dorsal Side of the Fopt. 



M. extensor digitorum communis brevis arises from the upper surface 

 of the Os calcis, and divides into four tendons, of which the most internal 

 is inserted separately into the dorsal surface of the I. phalanx of the 

 great toe, the other three into the long extensor tendons of the second, 

 third and fourth toes. 



Fig. 272 shows the Ligamentum cruciatum, whose upper portion 

 runs from the internal malleolus to the outer surface of the Os calcis, 

 whose lower portion from the scaphoid and internal cuneiform bones to 

 the external malleolus. 



Fig. 273 illustrates the Ligamentum fundiforme tarsi of Retzius, 

 which receives the tendons of the M. extensor digitorum communis longus ; 



it comes from, and goes to the Sinus tarsi. 



26* 



