REGIONAL ANATOMY. 



A. THE BOXES. 



The Second Pii \lanx. ( )s Coronae, or Small Pastern 

 Bone. — This belongs to the class of small bones, in that it 

 possesses no medullary canal. It is situated obliquely in 

 the digit, running from above downwards and from behind 



Fig. 1.— The Bones of the Phalanx. 



i, The os suffraginis ; 2, the os coronae; 3, the os pedis; 4, the 

 navicular bone, hidden by the wing of the os pedis, is in 

 articulation in the position indicated by the barbed line. 



to before, and articulating superiorly w ith the first phalanx 

 or os suffraginis, and inferiorly with the third phalanx and 

 the navicular bone. 



Cubical in shape, it is flattened from before to behind, 

 and may be described as possessing six surfaces: An 



