• World Neurosurg · Jul 2017

    Endoscopic Surgical Treatment of Lumbar Synovial Cyst.

    • Joachim M Oertel and Benedikt W Burkhardt.
    • Department of Neurosurgery, Saarland University Medical Center and Saarland University Faculty of Medicine, Homburg-Saar, Germany. Electronic address: oertelj@freenet.de.
    • World Neurosurg. 2017 Jul 1; 103: 122-132.

    BackgroundLumbar synovial cysts (LSCs) are an uncommon cause of radiculopathy and back pain. Open surgical treatment is associated with extensive bone resection and muscle trauma. The endoscopic tubular-assisted LSC resection has not been described in detail. Here the authors assessed the effectiveness of this technique for LSC resection.MethodsEleven patients (4 female and 7 male patients) were operated on via an ipsilateral approach for resection of LSC using an endoscopic tubular retractor system. Preoperative magnetic resonance imaging was evaluated for signs of degeneration and instability. At follow-up a standardized questionnaire including the Oswestry Disability Index and functional outcome according to MacNab criteria was conducted. Additionally, a personal examination with particular reference to back and leg pain was performed.ResultsThe mean follow-up was 10.5 months. Preoperatively, spondylolisthesis grade 1 was noted in 4 patients (36.4%). Ten patients had bilateral facet joint effusion (90.9%). At follow-up 10 patients reported being free of leg pain (90.9%), eight patients reported no back pain (72.7%), ten patients had full motor strength (90.9%), and 9 patients had no sensory deficit (81.8%). Nine patients reported an excellent or a good clinical outcome (81.8%). The mean Oswestry Disability Index was 4.7%. None of the patients developed new mechanical low back pain or required subsequent fusion procedure.ConclusionThe endoscopic tubular-assisted procedure is a safe way to treat LSC. It offers complete resection of LSC and achieves good clinical outcome by preserving muscle and ligamentous and bony structures, which prevents delayed instability.Copyright © 2017 Elsevier Inc. All rights reserved.

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