Authors: M F Surace A Fagetti S Fozzato P Cherubino
Publish Date: 2012/03/20
Volume: 21, Issue: 1, Pages: 69-74
Abstract
The purpose of this study is to report clinical outcome and imaging changes of percutaneous Aperius standalone implant in patients with degenerative lumbar spinal stenosis and neurogenic intermittent claudication which did not respond to conservative treatmentBetween January 2008 and July 2010 37 patients 20 males and 17 females with mean age of 643 years underwent surgery for the onset of claudicatio spinalis with Aperius PercLID interspinous device Medtronic In all patients the diagnosis was foraminal stenosis in one case 27 it was associated to a degenerative anterior listhesis I grade in three cases 81 it was associated to an intraforaminal disc herniation The mean followup was of 18 months range 2–35 months The patients were evaluated through the Oswestry disability index Zurich Claudication Questionnaire ZCQ VAS scales In all cases were obtained preoperative and in postoperative radiographs and magnetic resonance imagingDespite of the brief follow up the preliminary results are encouraging showing a significantly decrease of the disability parameters a marked improvement of the function with the vanishing of the claudicatio spinalis and the following increase of the free interval during the walk Aperius PercLID system seems to offer an alternative to the traditional decompression surgeryThe typical hyperextension of the affected spinal segment caused by the gradual loss of disc height leads to the annulus bulging facets hypertrophy spondylolisthesis and calcification of the ligamentum flavum 3 The NIC is the clinical manifestation of the root ischemia caused by the repetitive compression of the spinal canal and foramina
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