Chin, Kingsley R Prospective evaluation of a 3-blade speculum cannula for minimally invasive lumbar microdiscectomy. [electronic resource] - Journal of spinal disorders & techniques Jun 2006 - 257-61 p. digital Publication Type: Controlled Clinical Trial; Journal Article ISSN: 1536-0652 Standard No.: 10.1097/01.bsd.0000203272.12875.e4 doi Subjects--Topical Terms: AdultAgedCatheterization--instrumentationDiskectomy--instrumentationEquipment DesignEquipment Failure AnalysisFemaleHumansIntervertebral Disc Displacement--surgeryLaminectomy--instrumentationLumbar Vertebrae--surgeryMaleMiddle AgedMinimally Invasive Surgical Procedures--instrumentationProspective StudiesTreatment Outcome