Abstract

CEDENO QUEVEDO, Darío Alejandro; YANDUN M, Lina Lucero  and  PORTILLA DOMINGUES, Elmer. Surgical correction of mandibular fracture in a mare by interdental cerclage: a case report. Ces. Med. Vet. Zootec. [online]. 2018, vol.13, n.3, pp.329-337. ISSN 1900-9607.  https://doi.org/10.21615/cesmvz.13.3.3.

Secondary mandible fracture due to external trauma is not uncommon in horses, that being the most commonly fractured bone when the injure is on the animal´s head. In most cases, the injuries are open and damaging to surrounding soft tissues. As the bones of the head are not subjected to load forces, the support requirements for fracture fixation are less challenging. This paper describes the surgical treatment in field of a mandibular fracture in e 64-month-old Colombian Creole mare. It shows malocclusion with a tear on the buccal mucosa. Oral radiographic projection shows an open transverse fracture in the mandibular body at the level of the right alveolar plate region. Anesthesia is initiated with acepromazine (0.04 mg/kg intramuscular) and induction with xylazine (1.1 mg/kg) and ketamine (2.2 mg/kg intravenous). Total intravenous anesthesia with triple drip was used for maintenance (2 g of ketamine + 500 mg of xylazine in 1 liter of 5% guaifenesin) in constant infusion (2-3 ml/kg/h). After cleaning and debriding the wound, an incision is made through the cheek on the premolars 406 and 407. An orifice is drilled between the interalveolar spaces of the premolars. The wire is passed through the hole, which is routed rostrally and tied through the holes previously made between the incisors 402 and 403. The wire is twisted to increase compression in the fracture line. After tightening, the ends of the cables are bent. Post-operative management was based on the ad ministration of ketoprofen for 5 days, Penicillin G (20,000 IU/kg) and daily disinfection of the wound with Chlorhexidine 0.12%. The wire was left for 4 weeks, observing rapid healing and consolidation of the fracture. The restoration of the functions of apprehension and chewing were obtained quickly. It can be said that this technique provides a safe stability, is easy to perform and inexpensive.

Keywords : Interdental cerclage; mandibular fracture; surgery.

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