Impact of sagittal imbalance correction on clinical outcomes in patients undergoing MIS-TLIF for LSS

•Most sagittal imbalance was compensatory rather than structural.•Single-segment fusion could effectively improve sagittal imbalance.•Reconstruction of sagittal imbalance had no effect on 2-year clinical outcomes. In the present study, we aimed to evaluate the effect of sagittal imbalance correction...

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Bibliographic Details
Published in:Clinical neurology and neurosurgery 2019-06, Vol.181, p.119-126
Main Authors: Jia, Jun, Zhao, Yiwei, Liu, Xinyu
Format: Article
Language:English
Subjects:
Clinical outcomes
Imbalance
Incidence
Lumbar spinal stenosis
MIS-TLIF
Pelvis
Risk factors
Sagittal
Spine
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Summary:•Most sagittal imbalance was compensatory rather than structural.•Single-segment fusion could effectively improve sagittal imbalance.•Reconstruction of sagittal imbalance had no effect on 2-year clinical outcomes. In the present study, we aimed to evaluate the effect of sagittal imbalance correction on clinical outcomes in patients undergoing single-segment minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) for lumbar spinal stenosis (LSS). A total of 114 LSS patients with a minimum 2-year follow-up were included. Preoperative and final follow-up sagittal parameters were determined. Sagittal imbalance was defined as a sagittal vertical axis (SVA) ≥40 mm. Patients were divided into balanced group (group A: preoperative SVA 
ISSN:0303-8467
1872-6968
DOI:10.1016/j.clineuro.2019.04.017