PELVIC LIMBS 



745 



The plantar or inferior surface (Fig. 563) is very irregular. Its 

 general shape is that of a rectangle, whereof the tibio-distal angle is 

 produced into the neck and head. Almost the entire surface is occu- 



FIG. 562. 



Dorsal Side. 



With Tibia. 



Tibial Side. 



with Fibula. Fibular Side. 



With Scaphoid. With Calcaneum. 



Plantar Side. 



LEFT ASTRAGALUS, DISTAL ASPECT. 



pied by two large, complicated, articular facets for the. calcaneum. The 

 larger of these facets lies along the fibular side of the body and re- 

 sembles an oblong rectangle with the long diameter running somewhat 

 obliquely from the proximal to the distal end. The distal margin is 

 arcuate ; the proximal margin is arcuate, and is also the fibular margin 

 of the proximal surface. The fibular margin is emarginate, and is the 

 plantar border of the fibular surface. The tibial margin is emarginate, 

 and separated from the rest of the plantar surface and from the other 



FIG. 563. 



Proximal Side. 



For Ligament from inner side 

 of External Malleolus. 



Fibular Side. 



Groove for Intcrosseous Ligament. 



Body. 



With 

 Calcaneum. 



Tibial Side. 



Head. 



Distal Side. 



LEFT ASTRAGALUS, PLANTAR SURFACE. 



facet by a deep oblique groove. The facet is concave in the longi- 

 tudinal line and slightly concave from side to side. It is so twisted 

 on itself that, while the distal part faces to the plantar, proximal, and 



