PLATE XII. 



CURB. 



In this posterior view of the hind leg, from the point of the hock to about one- 

 third of the length of the cannon downwards, is displayed a curb, in its 

 ordinary chronic and permanent state, slit open and dissected so as to 

 develope its anatomy. 



The sub-cutaneous cellular faschia, including the annular ligament (a a) is 

 dissected off and pinned back, in order to bring into view the sheath of 

 the flexor tendons in the thickened and callous condition (b b) in which 

 it is found in — which, indeed constitutes the essence of — chronic or pro- 

 minent curb. The sheath has had a longitudinal division made of it, 

 and the divisions (b b) separated, with the view of better shewing the 

 augmentation of substance it has undergone, the consequence of disease 

 originating in sprain. This division and separation has brought into 

 view also the bursal cavity through which (the same as in the fore leg) 

 the perforans tendon (c) plays, in action. This is the cavity which is 

 distended with fluid in recent, and in some instances has been found 

 so in chronic, curb. 



(d) The posterior side of the point of the hock. 



(e) The lower (sawn) end of the metatarsal bone. 



