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KMID : 1150120190050010007
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Asian Journal of Pain
2019 Volume.5 No. 1 p.7 ~ p.11
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Effect of Facet Joint Effusion on Clinical and Radiographic Outcomes of Decompression for Degenerative Lumbar Spinal Stenosis
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Kim Jae-Yeon
Lee Jung-Hwan
Yoo Seung-Chan
Chough Chung-Kee
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Abstract
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Objective: The purpose of this study was to investigate the effect of facet joint effusion without radiographic instability on clinical and radiographic outcomes of decompression for degenerative lumbar spinal stenosis (DLSS).
Methods: We analyzed consecutive patients with DLSS undergoing L4-L5 decompression from May 2007 to January 2017 at a single institution. We investigated the effect of facet joint effusion on clinical and radiographic outcomes. For clinical assessment, visual analogue scale (VAS) for back and leg pain and Oswestry disability index (ODI) were measured. Slip percentage and segmental motion were measured on standing lateral lumbar flexion-extension (SLFE) radiographs. Facet joint effusion was measured on axial MRI for radiographic assessment.
Results: Facet joint effusion was not associated with VAS score for back pain, VAS score for leg pain, or ODI score at 2 years postoperatively (p=0.317, p=0.159, and p=0.054, respectively). Facet joint effusion was not associated with postoperative segmental motion at the index level (p=0.953). However, there was a significant association between facet joint effusion and postoperative slip percentage (p=0.014).
Conclusion: Facet joint effusion without radiographic instability has no effect on the clinical outcomes of decompression for DLSS except for postoperative slip percentage. Progression instability was very rare.
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KEYWORD
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Decompression, Facet effusion, Instability, Lumbar spinal stenosis, Spinal fusion
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