44 EQUINE ANATCfMY. 



3. External lateral, from outer side of radius to first bones of 

 upper and lower rows and outer metacarpal bone. 



4. Internal lateral, from inner side of the radius to principal 

 and inner metacarpal as well as into carpus. 



METACARPO-PHALANGEAL. 



Ginglymus joint between end of metacarpal bone and first 

 phalanx, with the two upper sesamoids. 

 Ligaments. 



Inter-sesamoid, between two sesamoids. 



Lateral sesamoid, between sides of sesamoids and upper extrem- 

 ity of first phalanx. 



Inferior sesamoid, of three fasciculi, from posterior surface of 

 first phalanx to sesamoids. 



External and internal lateral, from metacarpal to sides of first 

 phalanx. 



Anterior, between anterior surfaces of both bones. 



Posterior or suspensory ligament of the fetlock, from first and 

 second bone of inferior carpal row and posterior face of principal 

 metacarpal to top of sesamoids, divides into two fasciculi which 

 pass forward and are inserted into the anterior extensor of the 

 phalanges. 

 Movements. 



Flexion and extension. 



FIRST INTER-PHALANGEAL ARTICULATION. 



Imperfect ginglymus between first and second phalanges. 

 Ligaments. 



Two lateral ligaments between sides of bones. 



One posterior ligament or glenoidal fibro-cartilage attached to 

 the first and second phalanges by six bands ; It increases the ar- 

 ticular surface below and forms a sheath for the passage of the 

 perforans tendon, being in relation to the perforatus at its side. 

 Movements. 



Flexion, extension and some lateral motion. 



SECOND INTER-PHALANGEAL ARTICULATION. 



Imperfect ginglymus, between second and third phalanges. 

 Ligaments. 



Interosseous, between navicular and pedal bones. 



