410 



THE ANATOMY OF THE HORSE 



biises of the oi5sa sesamoidea, to wliich it is inserted, mixing also with the 

 int«r-sesamoideal ligament. The middle is of a triangular shape, and is 

 formed of three bands, two lateral and a median. It is often confounded 

 with the first ligament, although easily distinguishable from it by its 

 lower insertion. Fixed in common, inferiorly, to the apex of the triangular 

 ridge situated on the posterior surface of the os suffraginis, these three 



"15. 50 — Anteriiir View of Fetlock 



AND rASTER>f JOINTS. 



1. 1. 1. Lower row of cair-'il bones. 



2. Metacari'al bone. 



8. Extom.ii sp-s-inioid bone. 

 4. Suffragineal bone. 

 6. Coronal Iwne. 



6. Peilal bone. 



7. Tendon of the extensor pedis. 



li. Long ligament which blends inferiorly 

 with the tendon of the extensor 

 pedis. 

 9 Toint where the extensor tendon be- 

 gins to expand. 

 Ki k 11. Points to which the extensor 



tendon is att-ichcd. 

 12. 12. Lateral cartilages. 



FlO. 51.— POSTERTOR ViEW OF FETLOCK LKV 



Pastern Joisra. 



A. Metacarpal bone. 



B. B. Sesamoid bones. 



C. Suflfragineal bone. 



D. Ck)ronal bone. 



E. E. LaUral cartilages. 



F. Navicular bone. 



1. 1. 1. Lower row of carpal bone*. 



2. 2. Suspensory ligament. 



3. 3. Bifurcation of same, in order to join the 

 sesamoid bones. 



4. 4. Inter - sesamoideal fibre -cartilaginous sub- 

 stance. 



5. Point over which the tendon of the flexor pedis 

 pcrforans plavs. 



C. Inferior superficial sesamoideal ligament. 



7. 7. Middle inferior sesamoideal ligament, under 



which the deep-seat«l ligament is jilaced. 

 S. 9. 10. Ligament connecting the navicular and 



coronal bones. 

 11. Ligament connecting the pedal and navicular 



bones. 



bands diverge, the two lateral to be attached to the bases of the ossa 

 sesamoidea, the median becoming confounded with the surrounding liga- 

 ments. The deep-seated ligament is formed by two little bands, hidden by 

 the middle ligament, thin and short. These are fixed above to the bases of 

 the ossa sesamoides, and below to the superior extremity of the os suffra- 

 ginis near the edge of its articular surface. This ligament is in close 

 contact with the synovial membrane. 



The lateral sesamoideal ligaments are formed by two thin plates, which 



