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Lip Lacerations in Large Animals

By

Jan F. Hawkins

, DVM, DACVS, Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Purdue University

Last full review/revision Dec 2013 | Content last modified Dec 2013
Topic Resources

Wounds of the lips and cheeks occur frequently in horses. The most common cause is external trauma or secondary to the use of inappropriate bits or restraint devices. Lip lacerations may be accompanied by mandibular or incisive bone fractures with or without dental fractures and tooth avulsions. These occur when a horse grasps objects with its mouth and then pulls back when startled. Lip lacerations without bone or teeth involvement can be sutured, usually with a good result. Healing is rapid because of the good blood supply to the head. Lacerations left to heal by second intention can result in orocutaneous fistula, which may require resection and primary wound closure. Rarely, skin grafts or mucosal flaps are required to manage orocutaneous fistula.

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A 7-year-old gelding undergoes sedation for a standing surgery to clean and close a wound on the left forelimb. He is returned to his stall afterward, and several hours later he is observed to have nasal discharge containing feed material. He is also drooling, grinding his teeth, and intermittently coughing or retching. Which of the following conditions is most likely causing these clinical signs?
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