Lumbar interbody cages: Fusing means or only spacers?

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Diego Nicolas Flores Kanter
Alberto Javier Jabif
Pablo Nicolás Ortiz

Abstract

BackgroundSurgical fusion of the lumbar spine is a frequently used method for the treatment of painful lumbar segmental instability; currently the two instrumented fusion techniques most commonly used are posterolateral fusion with pedicle screws, and circumferential fusion by association of interbody cages. Although evidence shows that the association of intersomatic devices increases the fusion rate, most studies do not discriminate if this fusion occurs only posterolaterally, or an anterior fusion also occurs. The aim of this study is to determine if there is a true bone fusion at the level of interbody cages or if they act only as spacers.MethodsWe analyzed 28 patients with lumbar spine pathology surgically treated with one level circumferential lumbar fusion from May 2007 to January 2012, using post-surgical computed tomography, to assess the presence or absence of anterior arthrodesis. A therapeutic value, descriptive, observational study was conducted (evidence level IV); by statistical evaluation, frequency analysis was performed to describe the proportion of cases with anterior fusion.ResultsThe fusion rate reached 92.86%; while there was no anterior radiological fusion in 7.14% of patients. Conclusions: There is a high rate of anterior fusion at the level of the interbody cages, thus demonstrating that these devices act as fusing means and not only as anterior spacers.ConclusionsThere is a high rate of anterior fusion at the level of the interbody cages, thus demonstrating that these devices act as fusing means and not only as anterior spacers.    

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How to Cite
Flores Kanter, D. N., Jabif, A. J., & Ortiz, P. N. (2013). Lumbar interbody cages: Fusing means or only spacers?. Revista De La Asociación Argentina De Ortopedia Y Traumatología, 78(2), 74-79. https://doi.org/10.15417/211
Section
Clinical Research

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