88 



TOPOGRAPHICAL ANATOMY OF 



part of the joint between the second and third phalanges. The upper 

 (proximal) border is convex and thin. The lower (distal) border is 

 thicker and connected with the third phalanx and the digital torus. 

 Short ligamentous fibres pass between the contiguous edges of the 

 cartilage and phalanx. 



The anterior end of each cartilage reaches the edge of the tendon of 



.Third metacarpal bone. 



Sesamoid. 



.First phalanx. 



Cartilage of third phalanx 



Line of border of hoof. 



Sesamoid. 



Second phalanx 



_ 2> Third phalanx. 



Fig. 62. — Lateral Aspect of the Phalanges and the Cartilage of the Third Phalanx, to show 

 the Position of the Joint and Cartilage relative to the Surface of the Limb and the 

 Border of the Hoof. 



the common extensor muscle, and blends with the collateral ligament 

 of the joint between the second and third phalanges. The posterior 

 end forms a blunt in-curved angle reaching a considerable distance 

 beyond the angle of the third phalanx. 



Ligamentous bands should be defined and demonstrated as con- 

 necting the cartilages to the first and second phalanges. 



A short ligament passes from the anterior end of each cartilage to 

 the anterior (dorsal) surface of the second phalanx. An ill-defined 

 elastic band stretches from the deep surface of each cartilage to the 

 side of the distal end of the first phalanx. In addition, a short, strong 

 ligament connects the extremity of the sesamoid bone with the nearest 

 point on the neighbouring cartilage ; and a band connects the anterior 



