PELVIC LIMBS 755 



The flbular surface (Fig. 569) is oblong ; its dorsal margin is 

 horizontal and rounded. The upper part of the proximal margin is 

 emarginate ; the lower part is arcuate and rough, and passes into the 

 rough area at the filmic-plantar angle of the proximal surface. The 

 plantar margin is swollen ; the distal margin is indistinct, except where 

 it is also the margin of the large facet on the distal surface. The whole 

 surface is irregular, and for the most part gives attachment to the liga- 

 ment which binds the bone to the cuboid. 



On the dorsal half of the surface is an elongated, sometimes cres- 

 centic, facet which extends from near the dorso-distal angle downward 

 and backward nearly to the proximal margin. It is deeply concave 

 from the dorsal to the plantar side, and articulates with the tibial side 

 of the cuboid. On the proximal margin itself is another smaller facet 

 which meets a corresponding facet on the side of the greater process of 

 the calcaneum, as already described. The facets on the fibular surface 

 vary in relative position arid in size ; they are distinctly marked only 

 in the recent state. 



The distal surface (Fig. 570) has the outline of a square. Three 

 corners are rounded off; the fourth, the tibio-plantar, is produced in 



FIG. 570. 

 Dorsal Side. 



Tibial Side. , i2nterosseous Fibular Side. 



Ligament. 



*s 



With Entocuneiform 



Tuberosity. 



Plantar Side. 



LEFT SCAPHOID, DISTAL SURFACE. 



> 



the tuberosity. About half of the surface is rough for the attachment 

 of the interosseous ligament, and about half is occupied by articular 

 facets for the cuneiform bones. 



The largest of these facets lies at the dorsal and fibular sides. It 

 is somewhat triangular, the base of the triangle being its dorsal mar- 

 gin, which is also the dorsal border of the distal surface, and the apex 

 near the centre of the bone and separated from the larger of the two 

 remaining facets by a deep pit for a ligament and from the facet for 



