THE LIMT.S OF THE HORSE 



,x;, 



third phalanx. Its deep (dorsal) surface slopes from above downwards 

 and forwards in conformity with the obliquity of the deep flexor 

 tendon close to its insertion. Between the torus and the tendon 



XI. interosseus. - 



M. flexor digitorum 

 sublimis. 



Sesamoid bone. 



M Bexor digitorum 

 profundus. 



■ Ergot. 



Fhird metacarpal lione. 



XI. extensor digitorum communis. 



Ligg. sesamoidea obli'jua 

 Lig. sesamoideum rectum 



XI. flexor digitorum profundus. _ 



Sesamoid. 



5 



Lig. phalangosesamoideum 



Second phalanx. 



y. 



Third phalanx. 



Wall of hoof. 



Laminar matrix. 



Terminal arch of 

 digital vessels. 



Cuneua (" frog''). 



Cuneate matrix. Digital torus. Solar matrix. 



Fig. 58. — Longitudinal Section of the Digit. 



1 and 1', 2 and 2', 3 and 3'.= Joint capsules of the metacarpophalangeal, proximal 

 interphalangeal, and distal interphalangeal articulations respectively. 4. = Synovial sheath 

 of the flexor tendons. 5. = Synovial sheath of the deep flexor tendon. 



there is a fascial sheet that is proximally connected with the hirst 

 phalanx. 



The more superficial (volar) surface of the torus is almost horizontal 

 when the weight of the body rests on the limb. It is covered by the 

 cuneate part of the matrix, and upon this surface the cuneus (" frog ") 

 is moulded. Two diverging ridges bound a cleft into which the spine 

 of the " frog " fits. The ridges blend in front, and behind they end in 

 two rounded eminences that constitute the base or bulbs of the torus. 

 The apex of the torus is firmly adherent to the insertion of the deep 



