22 EQUINE ANATOMY. 



Radio-cubital joint. — Diarthrodial and synarthro- 

 dia!. For the first arthrodia, two flat facettes on each 

 bone. For the second, two rough surfaces, having the 

 radio-cubital arch between them. Two interosseous and 

 two peripheral bands. Yery limited motion in youth. 



Caepal joint. — Division: Radio-carpal, carpo-carpal, 

 carpo-metacarpal, superior inter-carpal, and inferior 

 inter-carpal. 



Radio-caepal joint. — Imperfect hinge. On radius, 

 outward, a wide groove, small glenoid cavity ; inward, 

 condyle with small glenoid cavity. On carpus, superior 

 face of upper row. Three posterior ligaments. One 

 synovial capsula, common to upper part of upper 

 inter-carpal joint. Flexion and extension. 



Carpo-carpal joint. — Imperfect hinge. Articular 

 surfaces irregular, those of the inferior face of the 

 bones of the upper row, and those of the superior face 

 of the bones of the lower row. Three ligaments, two 

 posterior and a third outside, from the trapezium to 

 the cuneiform bone. One synovial capsula, with culs 

 de sac to lower part of superior inter-carpal, and to 

 upper part of lower inter-carpal joint. Flexion and 

 extension. 



Carpo-metacarpal joint. — Arthrodia. On both 

 bones flat facettes. !Six ligaments : two anterior, two 

 posterior, two interosseous. One synovial capsula, 



