ARTICULATIONS 



ARTICULATIO INTERCARPEA (INTERCARPAL JOINT). 



The intercarpal joint has one joint cavity, but it includes 

 not only the articulations between the proximal and distal 

 rows of carpal bones which form the transverse part of the 

 joint but also the articulations between the bones of the 

 proximal row and those between the bones of the distal row. 

 The main part of the cavity of the joint lies between the bones 

 of the proximal and distal rows ; but two prolongations pass 

 proximally, one between the os lunaturri and the os naviculare, 



Recessus 

 sacciformis 



Os naviculare 

 man us 



Os capitatum 



Os mult- 

 angulum minus 

 Os maltangu- 

 lum majus"~~ 



FIG. 63. Coronal section through Radio-carpal, Carpal, and Carpo- 

 metacarpal and Inter-metacarpal Joints to show Joint Cavities and 

 Interosseous Ligaments (diagrammatic). 



and the other between the os lunatum and the os triquetrum, 

 and three diverticula are prolonged between the bones of the 

 distal row, beyond which they become continuous with the 

 cavity of the carpo-metacarpal joint. 



The bones of the proximal row are connected together by 

 two dorsal, two volar, and two interosseous ligaments, which 

 pass from the os lunatum to the os naviculare and os tri- 

 quetrum. which lie to either side of it. The two interosseous 

 ligaments are composed of short, stout fibres which pass 

 between the non-articular portions of the opposed surfaces of 

 the bones. They are readily seen from the proximal aspect, 



