THE METATARSAL BONES. 



429 



base. The strong shaft has three sides : an internal, looking also upward, in the 

 main convex ; an external, concave and nearly vertical ; and an iyiferior, or playitar. 



Fig. 445. 



B 

 Grooves for sesamoid bones 



Phalangeal surface 



# 



Internal 

 cuneiform 



External surface 



Plantar 



Head 



Internal surface 

 Interior surface 



External 

 surface 



Tibialis anticus 



Impression of peroneus longus Tuberosity Internal cuneiform 



Right first metatarsal. .4, proximal aspect ; j5, plantar aspect ; C, dorsal aspect. 



also concave. The borders bounding the outer surface are the most distinct. One' 

 or two nutrient foramina enter this surface, running distally. The enlarged and 



Lateral ligament 



Ext. cuneiform 

 Third metatarsal 



Mid. cuneiform 



Third metatarsal 

 Ext. cuneiform 



Plantar 



Third 

 metatarsal 



First 

 metatarsal' 



Base 



Internal 

 cuneiform 



Middle 

 cuneiform 



External cuneiform 

 Right second metatarsal. A, proximal aspect ; B, outer aspect ; C, inner aspect. 



rounded distal end, the head, is articular except at the sides, where it is flattened. 

 The facet extends farther onto the plantar aspect, where it expands laterally. It 



