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CC BY 4.0 · Vet Comp Orthop Traumatol
DOI: 10.1055/a-2685-8054
Original Research

Comparison of Stand-alone Cage versus Intervertebral Cage with Pedicle Screw and Rod Fixation in Dogs with Degenerative Lumbosacral Stenosis

Authors

  • Eline J.C. van den Brink

    1   Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands

  • Seyed A. Kamali

    1   Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands

  • Anna R. Tellegen

    1   Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands

  • Björn P. Meij

    1   Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
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Abstract

Objective

The aim of this study was to assess the clinical outcome of treatment of degenerative lumbosacral stenosis in dogs with a stand-alone intervertebral spacer (S group) and combined with a pedicle screw and rod fixation (S + PSRF group) in the lumbosacral junction.

Study Design

Retrospective study. Medical records (2014–2023) were reviewed for dogs treated with a stand-alone intervertebral spacer (S group) or a spacer combined with PSRF (S + PSRF group). Data collected included clinical signs at the time of presentation, surgical technique, implant type, perioperative bacterial culture, complications, outcomes and subsidence.

Results

Minor complications occurred in 10/11 dogs in the S group and 6/17 dogs in the S + PSRF group. Major complications occurred in 3/11 dogs in the S group and 5/17 dogs in the S + PSRF group. Long-term outcome was excellent in 63.6% dogs in the S group and 64.7% dogs in the S + PSRF group. Subsidence was noted in 75% of the cases in the S group compared with 33% of cases in the S + PSRF group. Bacterial cultures were positive in 6/28 cases.

Conclusion

Both treatment options were associated with full return of function in 64 to 65% of cases. Complications were more frequent in the S group. The S + PSRF group showed less subsidence of the cage. There was more frequent evidence of bone ingrowth in the intervertebral spacer in the S + PSRF group. Based on the observations in this study, both treatment options are viable for the treatment of degenerative lumbosacral stenosis with similar long-term outcomes; however, S + PSRF may result in less subsidence and better fusion and may therefore be preferable.

Keywords

dog - lumbosacral stenosis - pedicle screw and rod fixation - lumbosacral fusion

Authors' Contributions

E.J.C.B. identified suitable medical records, recorded demographic information, performed radiographic measurements, compiled all data, interpreted data, drafted and revised the manuscript. S.A.K. contributed to the design of the study, performed radiographic measurements, analysed the data for statistical significance and provided histological photographs and histopathological descriptions. A.R.T. contributed to the design of the study and provided radiographs, magnetic resonance imaging and computed tomography images with descriptions. B.P.M. contributed to the design of the study, was responsible for the surgical management of the cases, oversaw data collection, interpreted data and provided scientific, in-line editing of the manuscript. All authors provided a critical review of the manuscript and endorse the final version. All authors are aware of their respective contributions and have confidence in the integrity of all contributions.


Supplementary Material



Publikationsverlauf

Eingereicht: 23. September 2024

Angenommen: 16. August 2025

Artikel online veröffentlicht:
01. September 2025

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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