Fernando Guevara-Villazón, Louis Boissiere, Kazunori Hayashi, Daniel Larrieu, Soufiane Ghailane, Jean-Marc Vital, Olivier Gille, Vincent Pointillart, Ibrahim Obeid, Anouar Bourghli


April 2020, Volume 29, Issue 4, pp 886 - 895 Original Article Read Full Article 10.1007/s00586-020-06311-z

First Online: 28 January 2020

Purpose

Multiple-rod constructs (Multi-Rod: extra rods for additional pillar support) are occasionally used in adult spinal deformity (ASD) surgery. We aimed to compare and analyze the general outcome of multi-rod constructs with a matched two-rod cohort, to better understand the differences and the similitudes.

Methods

This is a retrospective matched cohort study including patients with ASD that underwent surgical correction with long posterior instrumentation (more than five levels), pelvic fixation and a minimum 1-year follow-up. Matching was considered with demographical data, preoperative radiographical parameters, preoperative clinical status [health-related quality-of-life (HRQoL) scores] and surgical characteristics (anterior fusion, decompression, rod material, osteotomies). Postoperative radiographical and clinical parameters, as well as complications, were obtained. Univariate and multivariate analysis was performed regarding postoperative improvement, group variables comparison and parameters correlation.

Results

Thirty-three patients with multi-rod construct and 33 matched with a two-rod construct were selected from a database with 346 ASD-operated patients. Both groups had a significant improvement with surgical management in the radiographical and HRQoL parameters (p 

Conclusion

No major disadvantage on the use of multi-rod construct was identified. This supports the benefit of using multi-rod constructs to avoid implant failure.

Graphical abstract

These slides can be retrieved under Electronic Supplementary Material.[graphic not available: see fulltext]


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