Estabilização de sínfise mandibular com cerclagem após disjunção traumática em cachorro-do-mato (Cerdocyon thous) / Mandibular symphysis stabilization after traumatic disjunction in a crab-eating fox (Cerdocyon thous)

Background: Fractures and dislocations are common orthopedic conditions arising from traumas from anthropic interaction on wild species, such as those caused by road trampling, being the mandibular separation with great frequency of occurrence in dogs and cats. The procedures for mandibular symphysis stabilization are described as of low complexity in the literature, however no reports of this procedure in wild canids were found. The purpose of this study is to report a surgical procedure of mandibular symphysis disjunction stabilization in an individual of the species Cerdocyon thous (crab-eating fox) through the technique of cerclage fixation using stainless steel wire.Case: An adult male individual of the free-living specie weighing 5.6 kg was referred to veterinary care after having been run-over. General physical examination showed abrasions in the ventral region of the jaw, discreet bleeding in the oral cavity, and mandibular instability. Subsequently, the patient underwent radiographic examination that revealed mandibular disjunction. The patient was therefore referred to the surgical unit for stabilization. During surgical anesthesia, two 12-gauge hypodermic needles (40x12 mm) were inserted percutaneously through the ventral region of the mandible, protruding into the oral cavity immediately caudal to the canine teeth. Next, both extremities of a 0.5 mm stainless steel wire were introduced into the interior of the needles and, when both ends extruded through the other end of the needles, the latter were removed, leaving only the steel wire uniting both rostral rami of the mandible. Using a twisting apparatus, the steel wire was twisted until the disjunction was completely stabilized and mandibular occlusion was deemed appropriate. Lastly, the surplus steel wire was sectioned, leaving a small segment that remained exposed to surface in the ventral region of the mandible.[...](AU)

Estabilização de sínfise mandibular com cerclagem após disjunção traumática em cachorro-do-mato (Cerdocyon thous) / Mandibular symphysis stabilization after traumatic disjunction in a crab-eating fox (Cerdocyon thous)

Background: Fractures and dislocations are common orthopedic conditions arising from traumas from anthropic interaction on wild species, such as those caused by road trampling, being the mandibular separation with great frequency of occurrence in dogs and cats. The procedures for mandibular symphysis stabilization are described as of low complexity in the literature, however no reports of this procedure in wild canids were found. The purpose of this study is to report a surgical procedure of mandibular symphysis disjunction stabilization in an individual of the species Cerdocyon thous (crab-eating fox) through the technique of cerclage fixation using stainless steel wire.Case: An adult male individual of the free-living specie weighing 5.6 kg was referred to veterinary care after having been run-over. General physical examination showed abrasions in the ventral region of the jaw, discreet bleeding in the oral cavity, and mandibular instability. Subsequently, the patient underwent radiographic examination that revealed mandibular disjunction. The patient was therefore referred to the surgical unit for stabilization. During surgical anesthesia, two 12-gauge hypodermic needles (40x12 mm) were inserted percutaneously through the ventral region of the mandible, protruding into the oral cavity immediately caudal to the canine teeth. Next, both extremities of a 0.5 mm stainless steel wire were introduced into the interior of the needles and, when both ends extruded through the other end of the needles, the latter were removed, leaving only the steel wire uniting both rostral rami of the mandible. Using a twisting apparatus, the steel wire was twisted until the disjunction was completely stabilized and mandibular occlusion was deemed appropriate. Lastly, the surplus steel wire was sectioned, leaving a small segment that remained exposed to surface in the ventral region of the mandible.[...]

Osteossínteses de ílio e fêmur em cachorro-do-mato (Cerdocyon thous) / Ilium and femur osteosynthesis in crab-eating fox (Cerdocyon thous)

Background: Fractures and dislocations are common orthopedic conditions arising from traumas from anthropic interaction on wild species, such as those caused by road trampling. Among the treatments, osteosynthesis is considered the method of choice in the treatment of fractures, such as ilium body fractures and femoral fractures. Based on this context, with regard to the incidence of auto accidents and few studies describing osteosynthesis techniques for crab-eating fox, the present study aimed to report the osteosynthesis performed on the body of the ileum and femur of a wild specimen of Cerdocyon thous. Case: A female, adult, crab-eating fox (Cerdocyon thous), coming from wild life was referred to hospital care with a history of run over. After specific examinations, it was diagnosed a complete transverse femoral shaft fracture, an oblique ilium body fracture, a pubic and ischial fracture, and pelvic canal narrowing. The treatment instituted was osteosynthesis of the femoral and ilium body fractures through the use of a 2.7 mm locking plate and screws. In the postoperative period, radiographic examination was performed, where bone callus formation was observed in the 5th week and bone remodeling and consolidation in the 11th week. After 140 days of rehabilitation, the animal was able to be released in the wild, with effective return of function of the pelvic limbs. The release was performed by environmental agencies in a national natural reserve, using radio necklace monitoring.Discussion: Osteosynthesis techniques and preoperative and postoperative management proved to be effective for the return of adequate function of the pelvic limbs in Cerdocyon thous. For wild animals, the use of internal orthopedic implants (plate and screws, for example) become the most suitable for osteosynthesis...

Osteossínteses de ílio e fêmur em cachorro-do-mato (Cerdocyon thous) / Ilium and femur osteosynthesis in crab-eating fox (Cerdocyon thous)

Background: Fractures and dislocations are common orthopedic conditions arising from traumas from anthropic interaction on wild species, such as those caused by road trampling. Among the treatments, osteosynthesis is considered the method of choice in the treatment of fractures, such as ilium body fractures and femoral fractures. Based on this context, with regard to the incidence of auto accidents and few studies describing osteosynthesis techniques for crab-eating fox, the present study aimed to report the osteosynthesis performed on the body of the ileum and femur of a wild specimen of Cerdocyon thous. Case: A female, adult, crab-eating fox (Cerdocyon thous), coming from wild life was referred to hospital care with a history of run over. After specific examinations, it was diagnosed a complete transverse femoral shaft fracture, an oblique ilium body fracture, a pubic and ischial fracture, and pelvic canal narrowing. The treatment instituted was osteosynthesis of the femoral and ilium body fractures through the use of a 2.7 mm locking plate and screws. In the postoperative period, radiographic examination was performed, where bone callus formation was observed in the 5th week and bone remodeling and consolidation in the 11th week. After 140 days of rehabilitation, the animal was able to be released in the wild, with effective return of function of the pelvic limbs. The release was performed by environmental agencies in a national natural reserve, using radio necklace monitoring.Discussion: Osteosynthesis techniques and preoperative and postoperative management proved to be effective for the return of adequate function of the pelvic limbs in Cerdocyon thous. For wild animals, the use of internal orthopedic implants (plate and screws, for example) become the most suitable for osteosynthesis...(AU)