776 



MAMMALIAN ANATOMY 



of the third metatarsal by its smaller size, and by being so twisted on 

 the long axis of the bone that the dorsal surface faces to the fibular 

 side as well as dorsally, and almost the entire tibial surface appears 

 on the dorsal aspect. 



The dorsal surface (Fig. 597) is narrow and directed toward the 



plantar and fibular sides. 



FIG. 597. 



Proximal End. 



Tibial Side. 



With Third 

 Metatarsal. 



With Cuboid. 



Fibular Side. 



FOURTH LEFT METATARSAL, DORSAL SURFACE OF BASE AND 



PART OF SHAFT. 



The proximal surface (Fig. 598) is oblong ; its long diameter is 

 directed from the dorsal end to the plantar and tibial sides. The 

 dorsal and plantar margins are faintly arcuate, the fibular margin is 

 straight, with a little projection at the plantar end, and the tibial 

 margin is emarginate at the middle. The surface is slightly convex 

 transversely and alternately gently convex and concave as it slopes 



FIG. 598. 

 Plantar Side. 



First. With Ectocuneiform. 



With Enlocuneiform. 



TMalSide. 



With Mesocuneijorm. 



\Cuboid. 



Side. 



Second. Third. Fourth. 



Dorsal Side. 



THE FIVE METATARSAL BONES IN POSITION, PROXIMAL 

 ASPECT OF BASES. 



from the plantar end dorsally to the distal end. It is smooth, except 

 for a small space adjoining the tibial emargination ; it articulates with 

 the distal surface of the cuboid. 



The fibular surface (Fig. 599) faces to the plantar as well as to the 

 fibular side. It consists of two parts, namely, an articular strip along 



