Preoperative MRI Findings Predict Two-Year Postoperative Clinical Outcome in Lumbar Spinal Stenosis

Pekka Kuittinen, Petri Sipola, Ville Leinonen, Tapani Saari, Sanna Sinikallio, Sakari Savolainen, Heikki Kröger, Veli Turunen, Olavi Airaksinen and Timo Aalto

PLOS ONE, 2014, vol. 9, issue 9, 1-6

Abstract: Purpose: To study the predictive value of preoperative magnetic resonance imaging (MRI) findings for the two-year postoperative clinical outcome in lumbar spinal stenosis (LSS). Methods: 84 patients (mean age 63±11 years, male 43%) with symptoms severe enough to indicate LSS surgery were included in this prospective observational single-center study. Preoperative MRI of the lumbar spine was performed with a 1.5-T unit. The imaging protocol conformed to the requirements of the American College of Radiology for the performance of MRI of the adult spine. Visual and quantitative assessment of MRI was performed by one experienced neuroradiologist. At the two-year postoperative follow-up, functional ability was assessed with the Oswestry Disability Index (ODI 0–100%) and treadmill test (0–1000 m), pain symptoms with the overall Visual Analogue Scale (VAS 0–100 mm), and specific low back pain (LBP) and specific leg pain (LP) separately with a numeric rating scale from 0–10 (NRS-11). Satisfaction with the surgical outcome was also assessed. Results: Preoperative severe central stenosis predicted postoperatively lower LP, LBP, and VAS when compared in patients with moderate central stenosis (p

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0106404

DOI: 10.1371/journal.pone.0106404

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