A comparison of conventional compression plates and locking compression plates using cantilever bending in an ilial fracture model
| Autor: | Thomas W.G. Gibson, R. J. Runciman, C. W. Bruce |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Ultimate load
Yield (engineering) 040301 veterinary sciences Dynamic compression plate Ilium 0403 veterinary science Fracture Fixation Internal Fractures Bone 03 medical and health sciences Dogs 0302 clinical medicine Animals Medicine Displacement (orthopedic surgery) Composite material 030222 orthopedics General Veterinary business.industry Stiffness 04 agricultural and veterinary sciences Compression (physics) Biomechanical Phenomena Prosthesis Failure Fracture (geology) Animal Science and Zoology Dynamic range compression Stress Mechanical medicine.symptom business Bone Plates |
| Zdroj: | Veterinary and Comparative Orthopaedics and Traumatology. 27:430-435 |
| ISSN: | 2567-6911 0932-0814 |
| Popis: | SummaryObjectives: The purpose of this study was to compare the stiffness, yield load, ultimate load at failure, displacement at failure, and mode of failure in cantilever bending of locking compression plates (LCP) and dynamic compression plates (DCP) in an acute failure ilial fracture model. Our hypothesis was that the LCP would be superior to the DCP for all of these biomechanical properties.Methods: Ten pelves were harvested from healthy dogs euthanatized for reasons unrelated to this study and divided into two groups. A transverse osteotomy was performed and stabilized with either a 6-hole DCP applied in compression or a 6-hole LCP. Pelves were tested in cantilever bending at 20 mm/min to failure and construct stiffness, yield load, ultimate load at failure, displacement at failure, and mode of failure were compared.Results: The mean stiffness of DCP constructs (193 N/mm [95% CI 121 – 264]) and of LCP constructs (224 N/mm [95% CI 152 – 295]) was not significantly different. Mean yield load of DCP constructs (900 N [95% CI 649 –1151]) and of LCP constructs (984 N [95% CI 733 –1235]) was not significantly different. No significant differences were found between the DCP and LCP constructs with respect to mode of failure, displacement at failure, or ultimate load at failure.Clinical significance: Our study did not demonstrate any differences between DCP and LCP construct performance in acute failure testing in vitro. |
| Databáze: | OpenAIRE |
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