• Pain physician · May 2014

    Case Reports

    Case series on variable presentation of ligamentum flavum stimulation following percutaneous cylindrical spinal cord stimulator lead implants.

    • Susie S Jang, Jeffrey E Arle, Jatinder S Gill, and Thomas T Simopoulos.
    • Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Boston, MA.
    • Pain Physician. 2014 May 1;17(3):E397-403.

    BackgroundStimulation-evoked discomfort secondary to ligamentum flavum stimulation (LFS) is a technological limitation of percutaneous spinal cord stimulator (SCS) lead implants. There is a paucity of literature describing the clinical presentation and time periods at which this side effect may present following insertion of cylindrical lead(s).ObjectiveTo describe a series of 5 patients who presented at varying time periods after SCS lead placement with LFS.Study DesignRetrospective case series.MethodsWe performed a chart review of online medical records of patients with symptoms consistent with LFS at an academic interventional pain clinic identified over 7 consecutive years (2006 - 2013).ResultsLFS most frequently presented within months of implantation of cylindrical leads. One patient complained of LFS during the temporary trial while another developed LFS after lead revision. All patients were successfully treated when paddle electrodes replaced percutaneous cylindrical leads.ConclusionLFS may present as a barrier to successful SCS treatment. Clinicians placing percutaneous SCS leads should be aware of the variable time course of LFS presentation. Paddle style electrodes seem to offer an enduring solution to LFS so that patients may continue to benefit from SCS therapy.

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