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Dynamic posterior stabilization for degenerative lumbar spine disease: a large consecutive case series with long-term follow-up by additional postal survey

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An Erratum to this article was published on 03 May 2016

Abstract

Introduction

Dynamic stabilization of the degenerated spine was invented to overcome the negative side effects of fusion surgery like adjacent segment degeneration. Amongst various different implants DSS® is a pedicle-based dynamic device for stabilizing the spine and preserving motion. Nearly no clinical data of the implant have been reported so far. The current analysis presents results from a single spine surgeon who has been using DSS® for the past 5 years and recorded all treatment and outcome data in the international Spine Tango registry.

Materials/methods

From the prospectively documented overall patient pool 436 cases treated with DSS® could be identified. The analysis was enhanced with a mailing of COMI patient questionnaires for generating longer-term follow-ups up to 4 years.

Results

387 patients (189 male, 198 female; mean age 67.3 years) with degenerative lumbar spinal disease including degenerative spondylolisthesis (6.1 %) could be evaluated. The type of degeneration was mainly spinal stenosis (89.9 %). After a mean follow-up of 1.94 years, the COMI score and NRS back and leg pain improved significantly and to a clinically relevant extent. The postoperative trend analysis could not determine a relevant deterioration of these outcomes until 4 years postoperative. 10 patients were revised (2.6 %) and the implant was removed; in most cases, a fusion was performed. Another 5 cases (1.3 %) had an extension of the dynamic stabilization system to the adjacent level. 84.2 % of patients rated that the surgery had helped a lot or had helped.

Discussion

The results of this large consecutive series with a follow-up up to 4 years could demonstrate a good and stable clinical outcome after posterior dynamic stabilization with DSS®. For degenerative diseases of the lumbar spine, this treatment seems to be a valid alternative to fusion surgery.

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Correspondence to L. P. Staub.

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Conflict of interest

The postal survey and the data entry of returned COMI questionnaires were financially supported by Paradigm Spine GmbH, Wurmlingen, Germany. No further funding has been received for the conduct of this study and/or preparation of this manuscript.

Additional information

An erratum to this article can be found at http://dx.doi.org/10.1007/s00586-016-4600-7.

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Greiner-Perth, R., Sellhast, N., Perler, G. et al. Dynamic posterior stabilization for degenerative lumbar spine disease: a large consecutive case series with long-term follow-up by additional postal survey. Eur Spine J 25, 2563–2570 (2016). https://doi.org/10.1007/s00586-016-4532-2

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  • DOI: https://doi.org/10.1007/s00586-016-4532-2

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