Biomechanical Comparison of Three Stabilization Methods for Tibial Tuberosity Fractures in Dogs: A Cadaveric Study.
| Autor: | Verpaalen VD; Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States., Lewis DD; Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, United States., Billings GA; Georgia Department of Agriculture, Animal Industry Division, Atlanta, Georgia, United States. |
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| Jazyk: | angličtina |
| Zdroj: | Veterinary and comparative orthopaedics and traumatology : V.C.O.T [Vet Comp Orthop Traumatol] 2021 Jul; Vol. 34 (4), pp. 279-286. Date of Electronic Publication: 2021 May 12. |
| DOI: | 10.1055/s-0041-1726082 |
| Abstrakt: | Objective: The aim of this study was to compare the biomechanical properties of a hybrid external skeletal fixator (HESF) construct to the placement of paired interfragmentary Kirschner wires alone, and pin and tension band wire (PTBW) fixation for the stabilization of simulated tibial tuberosity fractures in dogs. Study Design: Tibias were harvested from 12 skeletally mature dog cadavers weighing 20 to 30 kg. An osteotomy was made through the base of the tibial tuberosity, which was subsequently repaired with either paired Kirschner wires, PTBW fixation or a HESF. A tensile load was applied to the tibial tuberosity until failure occurred. Mode of failure was described and biomechanical parameters obtained were compared between fixation groups. Results: The PTBW fixation and HESF construct afforded greater stiffness and load at 3 mm of axial displacement compared with fixation with Kirschner wires alone. There was no significant difference in stiffness and load at 3 mm displacement between PTBW and HESF fixation. Failure occurred by bending and pullout of the Kirschner wires for all fixation groups, preceded by untwisting of the knot in PTBW specimens. Conclusion: The HESF may provide a favourable alternative to PTBW fixation for tibial tuberosity avulsion fracture stabilization in dogs with substantial remaining growth potential. Competing Interests: None declared. (Thieme. All rights reserved.) |
| Databáze: | MEDLINE |
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