LAMENESS IN THE FORE LEG 



59 



})y the proximal sesamoid bones. Situated as they are, between 

 tlie bifurcatino' portions of the suspensory ligament and the pos- 

 terior part of the distal end of the metacarpus — with which they 

 ai'ticulate — the sesamoid bones serve to change the course of the 



Stin 



Tendon of common exlensoi 



Bursa 



Capsule of fetlock joint 

 Cavity of fetlock joint 



Cavity of /laslcrti jmnl 



Cavity of coffin joint . ^^ 

 Coriinn of pcriople ^^ ^^ / 



I'criopk^S^. / 

 rutin Jg' -- : 



Middle scsamoidcan ligamcjil 



-f^ir/ Digital synovial sheath 



lfJJ~~ Cavity of pastern joint 



Superficial sesamoidean ligament 



Deep flexor tendon 



Distal end of digital sheath 



— r2 

 11 



Digital cushion 



Corium of sole 



Fig. 4— Sagital Section of Digit and Distal Part of Metacarpus. 



A, Metacarpal bone; B, first phalanx; C, second phalanx, D, third phalanx; 

 E, distal sesamoid bone; 1, volar pouch of capsule of fetlock joint; 2, inter- 

 sesamoidean ligament; 3, 4, proximal end of digital synovial sheath; 5. 

 ring formed by superficial flexor tendon; 6, fibrous tissue underlying ergot; 

 7, ergot; 8, 9, 9', branches of digital vessels; 10, distal ligament of distal 

 sesamoid bone; 11, suspensory ligament of distal sesamoid bone; 12, 

 12', proximal and distal ends of bursa podotrochlearis. (From Sisson's 

 "Anatomy of the Domestic Animals"'). 



branches of the suspensory ligament in a manner that they give 

 firm support to this joint. Volar Hexion is limited by the ex- 

 tensors of the phalanges. 



The first phalanx (os suffraginis) normally sets at an angle 



