THE CARPUS 



181 



surface has a conspicuous facet for the pisiform bone near the inner extremity, and 

 the dorsal surface is rough for ligaments. 



Articulations. — Pisiform, semilunar, and unciform. 



FOR LIGAMENT 

 FOR TRAPEZOID 

 FOR TRAPEZIUM 



F'iG. 136. — Tin: Left Scaphoid. 



FOR SEMILUNAR _ 



FOR MAGNUM — 



Fig. 1;]7.— The Left Semilunar. 



for cuneiform 



FOR UNCIFORM 

 FOR MAGNUM 



The Pisiform 



The pisiform resemljles closely a split pea. Its dorsal aspect, corresponding 

 \. to the cut surface of the pea, articulates with the facet on the i^almar surface of the 

 cuneiform. The rest of this bone is rough for the anterior annular ligament and 

 the tendon of i\\Q flexor carpi idnaris. 



Fig. 138. — The Left Cuneiform. 



FOR SEMILUNAR 

 FOR PISIFORM 



Fig. 139. — The Left Pisiform. 



F3R CUNEIFORM 



The Trapezium 



The trapezium is the first l)one of the distal row; it is very irregular in shape. 

 [The inferior surface is saddle-shaped, and articulates with the base of the first 



Fig. 140.— The Left Trapezium. 



FOR SCAPHOID 

 FOR TRAPEZOID 



FOR SECOND METACARPAL 



GROOVE FOR FLEXOR CARPI RADIALIS 



FOR FIRST METACARPAL 



I metacarpal })one. The superior surface has a facet for the scaphoid. The inner 

 (ulnar) surface has two facets; the lower and smaller is for the base of the second 



