چكيده لاتين :
Subluxation of the proximal interphalangeal joint (PIPJ or pastern joint) is an uncommon condition that
occurs in the forelimb or hindlimb. Thoroughbred racehorses rarely show dorsal pastern subluxation
(Thoroughbred ringbone) secondarily to an injury to the soft tissues supporting the fetlock. A 4-year-old
Thoroughbred mare was presented with signs of lameness, swelling of the dorsal aspect of the pastern region
of the right forearm and audible clicking sound when weight was placed on the limb. The condition seemed
to have been developed as a consequence of extreme overexertion 4 days before referral. Radiographic
examination of a non-weight bearing limb showed dorsal subluxation of the pastern joint. Under general
anesthesia the affected limb was immobilized by cast after reduction of the luxated bone into the PIPJ. The
affected limb was kept immobilized for four weeks. Then the cast was removed and the animal was given
rest for two months. Consequently, weight bearing on the affected limb was improved and no signs of
lameness were observed after six months.
