• İsmail Yüce, Okan Kahyaoğlu, Halit Arda Çavuşoğlu, Halit Çavuşoğlu, and Yunus Aydın.
• Acıbadem Mehmet Ali Aydınlar University, Vocational School of Health Services, Istanbul, Turkey. Electronic address: dr.ismailyuce@gmail.com.
• World Neurosurg. 2019 May 1; 125: e465-e472.

ObjectiveTo evaluate long-term outcome and reoperation rate for microsurgical bilateral decompression via unilateral approach of lumbar spinal stenosis, a common degenerative spinal disease of the lumbar spine.MethodsIn this observational prospective study, 918 patients were treated for single-level or multilevel lumbar spinal stenosis by bilateral decompression via unilateral approach between January 2002 and January 2016. Of 918 patients, 180 underwent microdiscectomy with decompression. Follow-up consisted of radiologic investigations, Oswestry Disability Index questionnaire, and 36-Item Short-Form Health Survey at 6 and 12 months postoperatively.ResultsThere were 492 female patients (53.6%) and 426 male patients (46.4%) with a mean age of 63.83 ± 10.16 years (range, 43-79 years). Symptom duration was 4-49 months. Average follow-up time was 98 months (range, 25-168 months), and reoperation rate was 2.5%. Oswestry Disability Index scores decreased significantly (from 30.65 ± 7.82 to 11.32 ± 2.50 at 6 months and 11.30 ± 2.49 at 12 months), and 36-Item Short-Form Health Survey parameter scores demonstrated a significant improvement in the early and late follow-up results.ConclusionsBilateral decompression via unilateral approach for lumbar spinal stenosis allowed a sufficient and safe decompression of the neural structures, resulting in a highly significant reduction of symptoms and disability, acceptable reoperation rate, and improved health-related quality of life.Copyright © 2019 Elsevier Inc. All rights reserved.

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