• World Neurosurg · Oct 2022

    5-year outcomes following decompression and fusion vs. decompression alone in the treatment of lumbar synovial cysts.

    • Syed I Khalid, James W Nie, Kyle B Thomson, Jeffrey Z Nie, Shashank N Patil, Victoria Zakrzewski, John Souter, Jennifer S Smith, and Ankit I Mehta.
    • Department of Neurosurgery, University of Illinois at Chicago, Chicago, Illinois, USA.
    • World Neurosurg. 2022 Oct 1; 166: e23e33e23-e33.

    BackgroundSpinal synovial cysts are acquired, fluid-filled lesions of the facet joint that most commonly occur in the lumbar spine. They are thought to arise from degenerative changes and to result from segmental instability. Although the treatment of these lesions has been studied, the long-term implications and effects of the different strategies for surgical intervention (i.e., decompression and fusion vs. decompression alone) have not yet been elucidated or established.MethodsUsing an all-payer database with 53 million patient records (MARINER-53), patients with a diagnosis of lumbar synovial cysts were identified. Patients who had undergone lumbar fusion versus laminectomy were matched 1:1 using binomial and gaussian logistic regression models to evaluate the need for future lumbar surgery within 5 years after their index procedure.ResultsNo statistically significant differences were noted between the 5-year rates of subsequent intervention, additional laminectomy, or fusion among patients who had undergone index decompression and fusion (n = 51; 10.5%) versus decompression alone (n = 43; 8.8%; P = 0.39). Furthermore, no significant differences were found in the odds of intervention type after index decompression and fusion versus decompression alone (subsequent laminectomy: odds ratio, 0.59; 95% confidence interval, 0.32-1.09; subsequent fusion: odds ratio, 1.14; 95% confidence interval, 0.64-2.02).ConclusionsPatient-specific factors and surgeon-patient-shared decision-making should be used when planning interventions for these lesions. However, synovial cysts might not require a fusion procedure for presumed instability. Further investigation is required, using randomized and prospective studies, to further evaluate the effective treatment of this entity.Published by Elsevier Inc.

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