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Abstract Full Text

Use of an external fixator with the tie-in configuration in osteosynthesis of femoral fracture of an ocelot.

Abstract

According to the literature, long bones are the most affected in cases of fractures in domestic cats, summing more than 50% of these affections, and no studies on the incidence among wild cat species were found. There are several techniques for stabilization of femoral fractures, and this study aimed to describe the use of a uniplanar external skeletal fixator (Type Ia) combined with an intramedullary pin (tie-in) in an ocelot (Leopardus pardalis), which was treated with a transverse fracture in the proximal third of the right femur. The approach to the femur was performed by inserting a normograde pin, and subsequently two external pins (schanz) proximally, and two distally to the fracture focus. The proximal and distal parts of the intramedullary pin were joined to an external connecting bar. Radiographic evaluations were performed at the end of the surgical procedure, and at 30 and 60 days after surgery; in the latter, adequate bone healing could be observed. Then the implants were removed. During the entire follow up period, complications were not observed with the implants or with the pin-skin interface. The technique used, tie-in configuration, promoted stability, was well accepted by the species, returned normal function to the operated member, and also provided adequate bone consolidation.