DISEASES OF THE FETLOCK, ANIvLE, AND FOOT. 415 



of the best treatment, the disease spreads until the tendon in front, 

 the lateral cartilage, or the coffin bone and joint as well are in- 

 volved. 



In all cases of subhorny quittor much relief is experienced when 

 the slough comes away, and rapid recovery is made. If, however, 

 after the lapse of a few days, the lameness remains and the woimd 

 continues to discharge a thin, unhealthy matter, the probabilities are 

 that the disease is spreading, and pus collecting in the deeper parts of 

 the foot. In Zundel's opinion, if the use of the probe now detects a 

 pus cavity below th,e opening, a cartilaginous quittor is in the course 

 of development. 



Treatment. — ^Hot baths and poultices are to be used until the pres- 

 ence of pus can be determined, when the tumor is to be opened with 

 a knife or sharp-pointed iron heated white hot. The hot baths and 

 poultices are now continued for a few days or until the entire slough 

 has come away and the discharge is diminished, when dressings 

 recommended in the treatment for cutaneous quittor are to be used 

 until recovery is completed. In cases in which 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 prevented from being 

 early returned to work. 



When the probe shows that pus has collected under the coffin bone 

 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 bichlorid of 

 mercury 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 24 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. 



CARTILAGINOUS QUITTOR. 



This form of quittor may commence as a primary inflammation of 

 the lateral cartilage, but in the great majority 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 



