ARTICULATIONS OF THE CARPUS. 163 



TRIANGULAR FIBRO-CARTILAGE. 



Origin and Insertion Styloid process of ulna to 

 edge of bone separating the sigraoid cavity of 

 radius from its carpal articular surface. (This 

 cartilage is interposed between the lower end of 

 the ulna and the carpal bones.) 



WRIST-JOINT. 

 LIGAMENTS : 

 ANTERIOR. 



Origin Inferior extremities of radius and ulna. 

 Insertion Anterior surface of scaphoid, semilunar, 

 and cuneiform. (This ligament is thick, broad, 

 and strong.) 

 POSTERIOR. 



Origin Posterior border of lower end of radius. 

 Insertion Posterior surface of scaphoid, semilunar, 



and cuneiform 

 EXTERNAL. 



Origin Styloid process of radius. 

 Insertion Outer surface of scaphoid. 

 INTERNAL. 



Origin Styloid process of ulna. 

 Insertion Inner side of cuneiform and pisiform 

 bones. 



ARTICULATIONS OF THE CARPUS. 



1. Those of the first row. 



2. Those of the second row. 



3. Those of the two rows together. 



Those of the First Row. 

 LIGAMENTS : 



Two DORSAL. Pass between the scaphoid and semi- 

 lunar, and cuneiform and pisiform. 



