Comparison of the mechanical behaviors of semicontoured, locking plate-rod fixation and anatomically contoured, conventional plate-rod fixation applied to experimentally induced gap fractures in canine femora

American Journal of Veterinary Research
Clara S S GohRoss H Palmer

Abstract

To compare the mechanical behaviors of a semicontoured, locking compression plate-rod (LCP-rod) construct and an anatomically contoured, limited-contact dynamic compression plate-rod (LC-DCP-rod) construct applied to experimentally induced gap fractures in canine femora. 16 femora from 8 cadaveric dogs. 8 limbs from 8 dogs were assigned to the LCP-rod construct group or the LC-DCP-rod construct group. In each femur, a 39-mm mid-diaphyseal ostectomy was performed at the same plate location and the assigned construct was applied. Construct stiffness and ostectomy gap subsidence were determined before and after cyclic axial loading (6,000 cycles at 20%, 40%, and 60% of live body weight [total, 18,000 cycles]). Three constructs from each group further underwent 45,000 cycles at 60% of body weight (total, 63,000 cycles). Following cyclic loading, mode of failure during loading to failure at 5 mm/min was recorded for all constructs. After 18,000 or 63,000 cycles, construct stiffness did not differ significantly between construct groups. No implant failure occurred in any construct that underwent 63,000 cycles. In both construct groups, ostectomy gap subsidence similarly increased as axial load increased but did not change after 18,00...Continue Reading

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Citations

Mar 6, 2013·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·P J DelisserN J Burton
Oct 2, 2013·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·I IrubetagoyenaA Autefage
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Oct 21, 2014·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·D DemnerS M Stover
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Oct 7, 2016·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·Tim PearsonGiselle L Hosgood
May 30, 2019·American Journal of Veterinary Research·Giovanni TremoladaNicolaas E Lambrechts
Jun 24, 2017·Veterinary Surgery : VS·Andreas GutbrodAntonio Pozzi
Nov 13, 2020·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·MacArthur L SandraLewis D Daniel

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