Introduction: Lumbar spinal stenosis (LSS) is a clinical syndrome of buttock or lower extremity pain, which may occur with or without back pain. The syndrome is associated with diminished space available for the neural and vascular elements in the lumbar spine. LSS is typically seen in elderly patients, its prevalence is estimated to be 47% in people over the age 60 years. LSS is the most common reason for spine surgery in Denmark and the number of surgical procedures is likely to increase due to demographic changes. The purpose of this study was to evaluate the patient-reported outcomes and perioperative complications of spinal decompression surgery in LSS patients.
Methods: This study is a retrospective study based on prospectively collected data from 3,420 consecutive patients with clinical and magnetic resonance imaging confirmed LSS. Patients were treated with posterior decompression surgery without fusion. Data were obtained from the DaneSpine register and collected pre- and post-operatively after a minimum interval of one year. The outcome measures were Oswestry Disability Index (ODI), European Quality of Life 5D (EQ-5D), visual analogue score (VAS), 36-Short Form Mental Component Summary (MCS), 36-Short Form Physical Component Summary (PCS) and self-reported walking distance.
Results: Of 3,420 cases enrolled, 2,591 (75%) had complete data after a minimum interval of one year. The mean ODI scores were 39.8 and improved to 24. The mean EQ-5D score was 0.40 and improved to 0.66. The mean VAS-leg improved from 54 to 36. The mean VAS-back improved from 46 to 34. The mean MCS improved from 28 to 36, and, finally, the mean PCS improved from 40 to 45. All p-values were 0.0000.
Conclusion: Surgery improved all the patient-reported outcome measures and 82% of patients were satisfied.
Funding: none.
Trial Registration: This study was registered with the Danish Data Protection Agency.
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