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dc.contributor.author | Hettlich, Bianca F.![]() |
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dc.contributor.author | Allen, Matthew J.![]() |
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dc.contributor.author | Glucksman, Gabriela S.![]() |
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dc.contributor.author | Fosgate, Geoffrey Theodore![]() |
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dc.contributor.author | Litsky, Alan S.![]() |
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dc.date.accessioned | 2015-06-30T06:15:30Z | |
dc.date.available | 2015-06-30T06:15:30Z | |
dc.date.issued | 2014-11 | |
dc.description.abstract | OBJECTIVE : To determine the biomechanical effect of an intervertebral spacer on construct stiffness in a PVC model and cadaveric canine cervical vertebral columns stabilized with monocortical screws/polymethylmethacrylate (PMMA). STUDY DESIGN : Biomechanical study. SAMPLE POPULATION : PVC pipe; cadaveric canine vertebral columns METHODS : PVC model – PVC pipe was used to create a gap model mimicking vertebral endplate orientation and disk space width of large-breed canine cervical vertebrae; 6 models had a 4-mm gap with no spacer (PVC group 1); 6 had a PVC pipe ring spacer filling the gap (PCV group 2). Animals – large breed cadaveric canine cervical vertebral columns (C2-C7) from skeletally mature dogs without (cadaveric group 1, n=6, historical data) and with an intervertebral disk spacer (cadaveric group 2, n=6) were used. All PVC models and cadaver specimens were instrumented with monocortical titanium screws/PMMA. Stiffness of the 2 PVC groups was compared in extension, flexion, and lateral bending using non-destructive 4- point bend testing. Stiffness testing in all 3 directions was performed of the unaltered C4-C5 vertebral motion unit in cadaveric spines and repeated after placement of an intervertebral cortical allograft ring and instrumentation. Data were compared using a linear mixed model approach that also incorporated data from previously tested spines with the same screw/PMMA construct but without disk spacer (cadaveric group 1). RESULTS : Addition of a spacer increased construct stiffness in both the PVC model (P< .001) and cadaveric vertebral columns (P<.001) compared to fixation without a spacer. CONCLUSIONS : Addition of an intervertebral spacer significantly increased construct stiffness of monocortical screw/PMMA fixation. | en_ZA |
dc.description.embargo | 2015-11-30 | en_ZA |
dc.description.librarian | hb2015 | en_ZA |
dc.description.sponsorship | Canine Intramural Fund, College of Veterinary Medicine, The Ohio State University. | en_ZA |
dc.description.uri | http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1532-950X | en_ZA |
dc.identifier.citation | Hettlich, BF, Allen, MJ, Glucksman, GS, Fosgate, GT & Litsky, AS 2014, 'Effect of an intervertebral disk spacer on stiffness after monocortical screw / polymethylmethacrylate fixation in simulated and cadaveric canine cervical vertebral columns', Veterinary Surgery, vol. 43, no. 8, pp. 988-994. | en_ZA |
dc.identifier.issn | 0161-3499 (print) | |
dc.identifier.issn | 1532-950X (online) | |
dc.identifier.other | 10.1111/j.1532-950X.2014.12165.x | |
dc.identifier.uri | http://hdl.handle.net/2263/45811 | |
dc.language.iso | en | en_ZA |
dc.publisher | Wiley | en_ZA |
dc.relation.requires | Adobe Acrobat Reader | en |
dc.rights | © 2014 by The American College of Veterinary Surgeons. This is the pre-peer reviewed version of the following article : Effect of an Intervertebral Disk Spacer on Stiffness After Monocortical Screw/Polymethylmethacrylate Fixation in Simulated and Cadaveric Canine Cervical Vertebral Columns, Veterinary Surgery, vol. 43, no. 8, pp. 988-994. 2014, doi :10.1111/j.1532-950X.2014.12165.x. The definite version is available at : http://onlinelibrary.wiley.comjournal/10.1111/(ISSN)1532-950X | en_ZA |
dc.subject | Intervertebral disk spacer | en_ZA |
dc.subject | Stiffness | en_ZA |
dc.subject | Biomechanical effect | en_ZA |
dc.subject | Cadaveric canine cervical vertebral columns | en_ZA |
dc.subject | Monocortical screws | en_ZA |
dc.subject | Polymethylmethacrylate (PMMA) | en_ZA |
dc.title | Effect of an intervertebral disk spacer on stiffness after monocortical screw/polymethylmethacrylate fixation in simulated and cadaveric canine cervical vertebral columns | en_ZA |
dc.type | Postprint Article | en_ZA |