SPEUNG- HOCK. 57 



notion. As great strain is put on the liocks wlien jumping, there 

 is a strong prejudice against curbs in hunters. At the same time, 

 the fact remains that many good lumters and stee])lechase horses 

 hare curbs which do not impair tlieir jumpii:g or galloping powers 

 in the slightest degree. 



Sprung Hock. 



This is a condition in which there is a severe sprain of this joint, 

 accompanied by extreme lameness, and great swelling both above 

 and below the inner and back aspect of the hock. The Ijack tendon 



Fig. 30. — Flat foot (curb) of man. (From an article on 

 "The Surgery of Deformities," bj' H. H. Ckitlon, 

 M.B., F.R.C.S., in Treves' "A System of Surgery." 

 Cassell & Co. Limited.) 



(the perforans) which passes over the os calcis (Fig, 98, p. 2.5.5) 

 may also be sptrained in this injtny. 



A few oases of slight sprain of the ligaments of the hock have 

 been observed, which were characterised by heat at the front p)art 

 of the joint, with lameness, and were caused by the horse's foot 

 getting caught in a fence when jumping. 



In sprung hock, there is high fever and great pain. 



TREATMENT.— Put the animal into slings ; for he will not lie 

 down to rest, because the injury is in a hind leg; and treat as 

 described on pages 26 to 28, and 4i to 49. 



After this accident, the animal should have about eiglit or nine 

 months' rest, which will probably render him capable of doing 

 useful work. 



