ssist in minimizing concussion which is received by the
suspensory ligament. The flexor tendons also, in contracting, exert
strain upon the inter-sesamoidean ligament, which has a similar effect
upon the sesamoid bones as that which is produced by the suspensory
ligament.

The condition occurs quite frequently, and because of the important
function performed by these bones, active inflammation of the sesamoids
constitutes a serious affection. Because of the fact that these bones
have proportionately large articular surfaces, when they are inflamed to
the extent that degenerative changes affect the articular cartilage,
complete recovery seldom results.

The same pathological changes occur here that are to be seen in any case
of arthritis. No special pathological condition characterizes
sesamoiditis but this condition causes incurable lameness when the
sesamoid bones are much inflamed.

Symptomatology.--In acute inflammation, there exist all the symptoms
which portray any arthritic inflammation of like character. The parts
are readily palpable and are found to be hot, supersensitive, and more
or less infiltration of the tissues contiguous to the joint causes
swelling. There is volar flexion of the phalanges when the subject is at
rest. Lameness is intense; in some acute inflammatory disturbances the
subject is unable to bear weight on the affected member.

In chronic sesamoiditis, constant lameness is the one salient feature
which marks the condition. While it is possible for one sesamoid bone to
become involved without its fellow being affected, this is not usual.
Considerable organization of tissue surrounding the joint is present and
no particular evidence of supersensitiveness exists. However,
supporting weight brings sufficient pressure to bear upon the inflamed
and more or less eroded bones so that pain is occasioned and lameness
results.

Treatment.--During acute inflammation, absolute quiet is, of course,
of first consideration. Cold packs are to be kept in contact with the
parts until acute inflammatory symptoms subside. The fetlock region is
then enveloped with a poultice or an iodin and glycerin combination
(iodin one part to seven parts of glycerin) is applied and a dressing of
cotton is kept in contact with the inflamed region. Following this, a
vesicant is employed and the subject is allowed a month's rest.

In sub-acute cases, the entire region surrounding the pastern is
blistered or the actual caute