Wry nose in horses does more than just look odd — it can affect the way a foal breathes and may lead to weaning and performance issues. It's unknown if the defect, where the upper jaw and nose are shifted to one side, is genetic or caused by an issue in utero.
Dr. Cassandra Sapper and colleagues at the University of Zurich tried a new, surgical approach to correcting the issue on two foals: the team cut the incisive and maxillary bones, then inserted a locking compression plate with screws to stabilize the gap. The front part of the septum was resected and a plate used to fixate the nasal bone deviation.
After surgery, the team reported that the foals' respiratory issues and facial malformation were markedly reduced, though the underbite and deviation could not be completely eliminated. The new technique did not cut the skin and muscle on the side of the head, so there was less soft tissue trauma than with traditional means of correcting wry nose.
Though previously it had been suggested that wry nose corrective surgery be done at two to three months of age, the study team used foals that were three and seven and a half weeks old. This was deemed advantageous because of their ability to heal rapidly at a younger age. The study team concluded that wry nose corrective surgery can be accomplished using this new method in young foals.
Read the case report here.
Read more at HorseTalk.
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