Journal
EXPERT REVIEW OF MEDICAL DEVICES
Volume 12, Issue 6, Pages 763-769Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1586/17434440.2015.1100071
Keywords
interspinous spacer; lumbar spinal stenosis; Superion; laminectomy
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Funding
- Vertiflex Inc (San Clemente, Ca, USA)
- Vertiflex, Inc.
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Objective: To compare the two-year clinical outcomes of a prospective, randomized controlled trial of an FDA-approved interspinous spacer with the compilation of published findings from 19 studies of decompressive laminectomy for the treatment of lumbar spinal stenosis. Methods: Back and leg pain, Oswestry disability index (ODI), and Zurich Claudication Questionnaire (ZCQ) values were compared between spacer- and laminectomy-treated patients preoperatively and at 12 and 24 months. Results: Percentage improvements between baseline and 24 months uniformly favored patients treated with the spacer for back pain (65% vs. 52%), leg pain (70% vs. 62%), ODI (51% vs. 47%) and ZCQ symptom severity (37% vs. 29%) and physical function (36% vs. 32%). Conclusion: Both treatments provide effective and durable symptom relief of claudicant symptoms. This stand-alone interspinous spacer offers the patient a minimally invasive option with less surgical risk.
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