THE PEDAL JOINT. 



39 



and fig. 24, h). These arise in common from the posterior 

 border of the navicular bone, which is completely occupied 

 by them, extend upwards on either side in an oblique direc- 

 tion over the lateral surfaces 

 of the coronet bone, to which 

 they are partly attached ; and 

 end on the anterior part of the' 

 lower extremity of the suffra- 

 ginis bone, becoming united 

 with the lateral ligaments of 

 this and of the coronet bones. 

 These ligaments sustain the 

 navicular bone in position. 

 The navicular bone is further 

 connected with the pedal bone, 

 and especially with the lateral 

 cartilages, by what German 

 anatomists term lateral liga- 

 ments (fig. 24, C). These con- ^^^ 24.-^, pedal bone; B, lateral cartilage 



sist Of short but strong masses cutthro;.gh J;-;-*^^^^^^^^^^ 



of lisramentOUS tissue, which navicular bones, for articulation with coronet 

 o ' bone ; 6, postero-lateral ligaments of navi- 



run obliquely from the ends of -Mr bone -t through ; ^^^-^^^o^ 



the navicular bone to the l^^^^ ; /; t^^ lateral ligament of navicular 



bone of the German anatomists. 



lateral cartilage of either side, 



to which and to the wings of the pedal bone they become 

 attached. They are really but extensions of the postero-lateral 

 ligaments, and the most important connecting ligament between 

 the pedal and navicular bones is undoubtedly the interosseous. 

 The pedal joint permits of slight lateral movements. 



