54 



SPEAINS. 



The calcaneo-ciiboid ligament is the term usually applied by English 

 veterinary surgeons, to the ligamentous mass, a portion of which gets sprained 

 in a case of curb. A more correct title would bs " the calcaneo-metatarsal 

 ligament ; " for that w^ould express its extreme points of attachment. It is 

 more convenient to regard this bundle of fibres as one large ligament with a 

 single attachment on the os calcis at its upper end, and several (correspond- 

 ing to the cuboid, cannon, splint bones, etc.) at its lower end, than to split 

 it up, more or less artificially, into a number of respective ligaments. 



The local character of the swelling of curb is a strong proof that the 



Pa' for an s miiscU 



Tibia 



True hockjomf 

 -Astracfolus -■ 



Ctiiieifomi inagnarn. . 

 Cuneiform mediiuiv 



Cufutcn 1)0 rie . . . . 



Jerforatiis 



Seat of thx>roiighjiiiXy 

 '\Seat ofca/ijved IwcJc 



Os ccilcis' 



Calcanto- ai boicb 

 licjcuneitt 



\ Ciiboid^ bono 

 ''--Seat ofairb 



.¥. ExternaZ sjUini bone 



I 



..Jhibi-atiLs 

 . fhforans 



Fig. 28.— Outside view of near hock, with some of the structures removed. 



prominent condition of the enlargement is due to a bony tumour, or to dis- 

 l)laccment of bones rather than to inflammation of ligament, the swelling of 

 which is always more or less diffuse. Be>ides, the good effect of severe 

 blistering, and especially of firing, for removing lameness in recent cases of 

 curb, clearly shows that the pain which causes the lameness is not as a 

 rule that of sprain to ligament or tendon. The preceding remarks on the 

 natura of curb most strongly suggest to me the conclusion that the 

 accompanying pain in recent cases is generally the result of an inflamed con- 

 dition of bone, aggravated more or less by the pressure of the back tendons 

 on the part. In arriving at this opinion, I in no way desire to ignore the fact 

 that the injury %vhich gives rise to the offending bony tumour is a sprain of 



