e synovial cavity of the joint, and the exterior of the parts are
vigorously massaged immediately after injection to stimulate
distribution of the iodin throughout the synovial cavity. Where a
bilateral affection exists, two or three weeks' time should intervene
between the treatments of each leg. A sterile metal syringe equipped
with a slip joint for the needle is well adapted to this operation.
Lubrication of the plunger with heavy sterile vaseline or glycerin will
prevent the syringe from being ruined by the iodin.

Following the injection, the subject is kept in a stall or in a suitable
paddock, so that conditions may be observed for four or five days. The
object sought by the introduction of iodin is not only for a local
effect upon the synovial membranes in checking secretions, but the
production of an active inflammation and great swelling, which will
remain from four weeks to three months subsequent to the injection. This
periarticular swelling should produce and maintain a constant pressure
over the entire affected parts for a sufficient length of time until
normal tone is re-established.

In some cases, swelling does not develop as the result of a single
injection of iodin. When marked swelling has not taken place within five
days, none will occur and a repetition of the injection may be made
within ten days after the first treatment has been given. One may safely
increase the amount of iodin at the second injection in such cases by
one-fourth to one-third.

In Europe this method of treating bog spavin has been employed by
Leblanc, Abadie, Dupont and others according to Cadiot; but Bouley, Rey,
Lafosse and Varrier used it with bad results. Where a perfect technic is
executed (and no other is excusable in this operation), no infection
will occur if a reasonable amount of iodin is injected. The dilution of
iodin with an equal amount of alcohol has been practised by the author
in many cases, but later this was found unnecessary.

Other methods of treatment have been used with success. Perhaps the most
heroic consists in opening the joint capsule with a bistoury or with
the actual cautery. Such practice is too hazardous for general use and
is not to be recommended, although good results should follow the
employment of such methods if infectious arthritis does not occur.

Line firing over the distended capsule is a practical method of
treatment. This is attended with good results in young animals in many
cases