KMID : 1103720210820010162
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Journal of the Korean Society of Radiology 2021 Volume.82 No. 1 p.162 ~ p.172
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Efficacy of Fluoroscopy-Guided Lumbar Facet Joint Synovial Cyst Rupture with Intra-Articular Steroid Injection after Laminectomy
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Kim Hyo-Jin
Lee Eugene Lee Joon-Woo Kang Yu-Suhn Ahn Joong-Mo
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Abstract
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Purpose: We retrospectively evaluated the technical success rate and long-term efficacy of fluoroscopy-guided synovial cyst rupture followed by an intra-articular steroid injection at the post-laminectomy lumbar facet.
Materials and Methods: We selected subjects who had undergone a fluoroscopy-guided synovial cyst rupture with simultaneous intra-articular steroid injection within 6 months of MRI and demonstrated a symptomatic facet joint synovial cyst at the level of a previous lumbar laminectomy. Fourteen patients were enrolled, and we determined whether cyst rupture and symptom improvement were achieved after each procedure. The degrees of symptom improvement were categorized into 4: 1) symptoms improved (30% or more reduction, based on pre-procedural and post-procedural Numerical Pain Rating Scale scores), 2) symptoms not improved, 3) patient underwent surgery after injection, and 4) loss of follow-up.
Results: The success rate of percutaneous synovial cyst rupture decreased with repeated procedures (62.5% for the first procedure and 0% to 33.3% for additional procedures). However, 80% of the patients had symptom improvement with the procedures, overall. The surgery rate was 14.3% in 14 patients.
Conclusion: For patients with post-laminectomy symptomatic lumbar facet joint synovial cysts, fluoroscopy-guided synovial cyst rupture with intra-articular steroid injection may be an effective and less invasive treatment before considering a surgical approach.
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KEYWORD
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Spine, Synovial Cyst, Radiculopathy, Fluoroscopy, Laminectomy
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