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Biomechanical Comparison between Inverted Triangle and Vertical Configurations of Three Kirschner Wires for Femoral Neck Fracture Fixation in Dogs: A Cadaveric Studyopen access

Authors
Heo, S.Lee, H.Roh, Y.Jeong, J.
Issue Date
Apr-2023
Publisher
MDPI
Keywords
dog; femoral neck fracture; internal fixation; inverted triangle; K-wire configuration
Citation
Veterinary Sciences, v.10, no.4
Indexed
SCIE
SCOPUS
Journal Title
Veterinary Sciences
Volume
10
Number
4
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/68699
DOI
10.3390/vetsci10040285
ISSN
2306-7381
2306-7381
Abstract
The purpose of this study was to compare single-cycle axial load and stiffness between inverted triangle and vertical configurations of three Kirschner wires (K-wires) for femoral neck fracture fixation in small dog cadaveric models. In each of the eight cadavers, the basilar femoral neck fracture model was prepared on both sides of the femur. One side of the femur was stabilized with three 1.0 mm K-wires of an inverted triangle configuration (group T), and the other femur was stabilized with a vertical configuration (group V). Postoperatively, the placement of the K-wires was evaluated with radiographic and computed tomography (CT) images, and static vertical compressive loading tests were performed. The mean yield load and the lateral spread were significantly higher in group T compared to group V (p = 0.023 and <0.001). On the cross-section of femoral neck at the level of the fracture line, the surface area between K-wires was significantly larger (p < 0.001) and the mean number of cortical supports was significantly higher in group T (p = 0.007). In this experimental comparison, the inverted triangle configuration of three K-wires was more resistant to failure under axial loading than the vertical configuration for canine femoral neck fracture fixation. © 2023 by the authors.
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