DISEASES OF THE HOKSE. 389 



has come awa}'- and the discharge is diminished, when dressings 

 recommended in the treatment for cutaneous quittor are to be used 

 until recovery is completed. In cases where the discharge comes 

 from a cleft between the upper border of the hoof and the coronary 

 band, always pare away the loosened horn, so that the soft tissues 

 beneath are fully exposed, care being taken not to injure the healthy 

 parts. This operation permits of a thorough inspection of the dis- 

 eased parts, the easy removal of all gangrenous tissue, and a better 

 application of the necessary remedies and dressings. The only objec- 

 tion to the operation is that the patient is prevent<xl from being early 

 returned to work. 



When the probe shows that pus has collected under the cotfinbone, 

 the sole must be pared through, and, if caries of the bone is present, 

 the dead parts cut away. After either of these operations the wound 

 is to be dressed with the oakum balls, saturated in the bichloride of 

 mercur}"^ solution, as previously directed, and the bandages tightly 

 applied. Generally the discharge for the first two or three days is so 

 great that the dressings need to be changed every twenty-four hours; 

 but when the discharge diminishes, the dressing may be left on from 

 one to two weeks. Before the patient is returned to work, a bar shoe 

 should be applied, since the removed quarter or heel can only be made 

 perfect again by a new growth from the coronary band. 



Tendinous or cartilaginous complications are to be treated as directed 

 under those headings. 



rAnnLA(;iN()r.s quittok. 



This form of quittor ma}' commence as a primary inllammation of 

 the lateral cartilage, but in the great majoritj^ of cases it appears as a 

 sequel to cutaneous or subhorny quittor. It may affect either the fore 

 or hind feet, but is most commonly seen in the former. As a rule, it 

 attacks but one foot at a time, and but one of the cartilages, generally 

 the inner one. It is always a serious affection for the reason that, in 

 many cases, it can only be cured b}^ a surgical operation, requiring a 

 thorough knowledge of the anatoni}' of the parts involved and nuich 

 surgical skill. 



Causes. — Direct injuries to the coronet, such as trampling, pricks, 

 burns, and the blow of some heavy falling ol)ject which may puncture, 

 bruise, or crush the cartilage, are the conunon direct causes of carti- 

 laginous quittor. Besides being a sequel to the other forms of quittor, 

 it sometimes develops as a complication in suppurative corn, canker, 

 grease, laminitis, and punctured wounds of the foot. Animals used 

 for heavy draft, and those with flat feet and low heels, are more 

 liable to the disease than others, for the simple reason that the}^ are 

 more exposed to injury. Rough roads also predispose to the disease 

 by increasing liability to injury. 



