DISEASES OF THE FETLOCK, ANKLE, 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. F 
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 wound 
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 the 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 inflamination 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 
