Indirect Decompression on MRI Chronologically Progresses After Immediate Postlateral Lumbar Interbody Fusion: The Results From a Minimum of 2 Years Follow-Up

Spine
Hiroaki NakashimaShiro Imagama

Abstract

MINI: On magnetic resonance imaging, indirect decompression using lateral lumbar interbody fusion and posterior fixation was confirmed immediately after surgery and also continuously progressed after surgery, particularly during the first 6 months. Thecal sac enlargement was also confirmed, and is suspected to be caused by the atrophy of the ligamentum flavum and the disc. A prospective cohort study. The aim of this study was to investigate radiographical changes related to indirect decompression using lateral lumbar interbody fusion (LLIF) with posterior fixation. Indirect lumbar decompression via LLIF is used to treat degenerative lumbar diseases requiring neural decompression. Although evidence suggests that thecal sac enlargement follows shortly after surgery, few studies have described the postoperative changes on MRIs. This study involved 102 patients who underwent indirect decompression at 136 levels, with LLIF and posterior fixation. Magnetic resonance imaging (MRIs) were collected preoperatively and several times postoperatively (over a 2-year period starting immediately after surgery). We then quantified the cross-sectional areas of the thecal sac and ligamentum flavum, as well as the anteroposterior diameter of disc ...Continue Reading

References

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Citations

Apr 16, 2020·Neuroradiology·Akaworn MahatthanatrakulJin-Sung Kim
Nov 29, 2020·Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia·Akihiko HiyamaMasahiko Watanabe
Apr 2, 2021·The Bone & Joint Journal·Marcus Kin Long LaiJason Pui Yin Cheung

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