AXATOMY IN A NUTSHELL. 



171 



appears in the fourth or fifth year, and joins the shaft at the twenty-second 

 year or later. The center for the distal extremity appears during the second 

 year, and unites with the shaft at the twentieth year. 



Articulation-.— With two bones: the tibia and the astragalus. 



Attachment of Muscles.— Nine ; to the head, the Biceps. Sol.-us. and 



PLATE LX. 



FLEXOR LONGUS HALLUCIS 

 SESAMOID BONE: 



- . 



& ec • £j fV t? >N i i, / ' 



FLEXOR BREVIS HALLUCIS 



- ■ ?- \ 



TIBIALIS POSTICUS 



FLEXOR LONGUS DIGITORUM - 



FLEXOR LONGUS HALLUCIS 



. 



GROOVE FOR PERONEUS LONGUS 



Third Later of Must les of the Foot. 



Peroneus Iongus; to the shaft, its anterior surface, the Extensor longus digi- 

 torum, Peroneus tertius, and Extensor proprius hallucis; to the internal surface, 

 the Tibialis posticus; to the posterior surface, the Soleus and Flexor longus hal- 

 lucis: to the external surface, the Peroneus longus and brevis. 



The fibula is a vestigial bone in man and survives mainly on account of 

 the excessive development of its malleolus. This accounts for the fad thai the 



