Evaluating Stiffness of Fibreglass and Thermoplastic Splint Materials and Inter-fragmentary Motion in a Canine Tibial Fracture Model.
Wagoner, Amanda L
Veterinary and comparative orthopaedics and traumatology : V.C.O.T
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Wagoner, A. L., Allen, M., Zindl, C., Litsky, A., Orsher, R., & Ben-Amotz, R. (2018). Evaluating Stiffness of Fibreglass and Thermoplastic Splint Materials and Inter-fragmentary Motion in a Canine Tibial Fracture Model.. Veterinary and comparative orthopaedics and traumatology : V.C.O.T, 31 (3), 176-181. https://doi.org/10.1055/s-0038-1637744
Objectives: Various materials are used to construct splints for mid-diaphyseal tibial fracture stabilization. The objective of this study was to compare construct stiffness and inter-fragmentary (bone) motion when fiberglass (FG) or thermoplastic (TP) splints are applied to either the lateral or cranial aspect of the tibia in a mid-diaphyseal fracture model. Methods: A coaptation bandage was applied to eight cadaveric canine pelvic limbs, with a custom formed splint made of either FG or TP material applied to either the lateral or cranial aspect of the tibia. Four-point bending tests were performed to evaluate construct stiffness and inter-fragmentary motion in both frontal and sagittal planes. Results: For a given material, FG or TP, construct stiffness was not affected by splint location. Construct stiffness was significantly higher with cranial FG splints than with cranial TP splints (p<0.05) but this difference was less evident when comparing splints applied laterally (P=0.15). Inter-fragmentary motions in the sagittal and frontal planes were similar across splint types for cranial splints, but for lateral splints there was a 64% reduction in frontal plane motion when FG was used as the splint material (p=0.03). Clinical Significance: FG produces a stiffer construct but the difference is not reflected in a reduction in inter-fragmentary motion. For lateral splints, FG splints are associated with reduced inter-fragmentary motion as compared to TP and may therefore have slight superiority for this application.
Hindlimb, Stifle, Animals, Dogs, Tibial Fractures, Cadaver, Glass, Materials Testing, Splints, Stress, Mechanical, Biomechanical Phenomena
External DOI: https://doi.org/10.1055/s-0038-1637744
This record's URL: https://www.repository.cam.ac.uk/handle/1810/276839