ARTICULATIONS OF THE ANTERIOR LIMBS. 



Fie;. 1 

 into which it is inserted by becoming 

 confounded with the intersesamoid liga- 

 ments. Its posterior face, lined by the 

 synovial membrane of the so-called sesa- 

 moid sheath, is covered by the flexor 

 tendons ; it partly covers the middle 

 ligament. 



The middle ligament, triangular and 

 radiating, is composed of three particular 

 fasciculi : two lateral (seen on each side 

 of the superficial ligament in Fig. 131, 

 A 8), and a median which has been 

 generally confounded with the superficial 

 ligament, although it is clearly distin- 

 guished from it by its inferior insertion. 

 Fixed in common to the posterior imprints 

 of the first phalanx, these three fasciculi 

 diverge in ascending to the base of the 

 sesamoids, where they have their upper 

 insertion. 



The deep ligament is constituted by 

 two small bands concealed beneath the 

 middle ligament. Thin, short, flattened 

 before and behind, and intercrossed (Fig. 

 131, B 3), these bands are fixed to the 

 base of the sesamoids in one direction, 

 and in the other to the superior extremity 

 of the first phalanx, near the margin of 

 its articular surface. This ligament is 

 covered on its anterior face by the synovial 

 membrane of the articulation. 



CARPAL, METACARPAL, AND INTER-PHALANGEAL 



ARTICULATIONS OF THE HORSE (POSTERO- 

 LATERAL view). 

 R, Radius ; c, carpus ; M, metacarpus ; s, navicular 



bone ; P, third phalanx. 1, Supercarpal bone ; 



2, its proper ligament ; 3, external lateral liga- 

 ment of the carpal articulations (superficial 



layei'); 3, ditto (deep layer); 4, groove for the 



tendon of the external Hexor of the metacarpus; 



5, common posterior ligament of the carpal 



articulations; 6, superior sesamoidean, or sus- 

 pensory ligament of the fetlock ; 7, an originating 



branch of ditto ; 8, 8, terminal branches of ditto ; 



9, band given off by ditto to the anterior extensor 



of the phalanges ; 10, tendon of the anterior 



extensor of the phalanges ; 11, groove formed by 



the posterior face of the intersesamoidean liga- 

 ment; 12, lateral metacarpo-phalangeal ligament 



(superticial layer); 12', ditto (deep layer) ; 14, 



inferior superficial sesamoidean ligament ; 15, 



ditto (deep layer); 16. elenoidal fibro-cartilage of 



the second phalanx ; 17. 18, 19, superior, middle, 



and inferior bands of that fibro-cartilage ; 20, 



lateral ligament of the first inter-phalangeal 



articulation; 21. lateral posterior ligament of 



the second inter-phalanceal ai'ticulation ; 22, 



anterior lateral ligament of ditto. 

 16 



20» 



