INTRODUCTION: Sagittal imbalance is an important risk factor for spinal disability, pain and loss of health related quality of life. Its correction has a positive impact on these outcomes. Still, it is a very aggressive surgery, with a high revision rate. The aim of this study is to analyze the most important causes of failure of surgery for correction of sagittal imbalance. DESIGN AND METHODS: In this retrospective observational cohort study twelve patients who previously underwent surgery for sagittal imbalance correction were revised in the period 2009-10. We analyzed angular parameters of sagittal balance before and after primary surgery, type of instrumentation, modality of fusion, implant density, instrumented levels, modality of failure, time from first surgery and angular parameters after revision. RESULTS AND CONCLUSION: Causes of failure were insufficient correction, junctional kyphosis, screw loosening and pseudoarthrosis with rod breakage. In every case, patients presented a new onset or a worsening of sagittal imbalance and pain.
INTRODUCTION: Sagittal imbalance is an important risk factor for spinal disability, pain and loss of health related quality of life. Its correction has a positive impact on these outcomes. Still, it is a very aggressive surgery, with a high revision rate. The aim of this study is to analyze the most important causes of failure of surgery for correction of sagittal imbalance. DESIGN AND METHODS: In this retrospective observational cohort study twelve patients who previously underwent surgery for sagittal imbalance correction were revised in the period 2009-10. We analyzed angular parameters of sagittal balance before and after primary surgery, type of instrumentation, modality of fusion, implant density, instrumented levels, modality of failure, time from first surgery and angular parameters after revision. RESULTS AND CONCLUSION: Causes of failure were insufficient correction, junctional kyphosis, screw loosening and pseudoarthrosis with rod breakage. In every case, patients presented a new onset or a worsening of sagittal imbalance and pain.
Authors: Steven D Glassman; Sigurd Berven; Keith Bridwell; William Horton; John R Dimar Journal: Spine (Phila Pa 1976) Date: 2005-03-15 Impact factor: 3.468
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Authors: Luigi La Barbera; Hans-Joachim Wilke; Christian Liebsch; Tomaso Villa; Andrea Luca; Fabio Galbusera; Marco Brayda-Bruno Journal: Eur Spine J Date: 2019-08-14 Impact factor: 3.134
Authors: Pedro Berjano; Ming Xu; Marco Damilano; Thomas Scholl; Claudio Lamartina; Michael Jekir; Fabio Galbusera Journal: Eur Spine J Date: 2019-05-25 Impact factor: 3.134