J Minim Invasive Spine Surg Tech.
2023 Oct;8(2):205-213. 10.21182/jmisst.2023.00948.
Clinical and Radiological Outcomes of Spinous Process-Splitting Laminectomy for Lumbar Spinal Stenosis at 1 Year: A Preliminary Report of a Single-Institution Experience
- Affiliations
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- 1Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
- 2Department of Neurosurgery, Wiltse Memorial Hospital, Suwon, Korea
- KMID: 2562174
- DOI: http://doi.org/10.21182/jmisst.2023.00948
Abstract
Objective
This study investigated the clinical and radiological outcomes of lumbar spinous process-splitting laminectomy (LSPSL) performed to treat lumbar spinal stenosis at a single institution in Korea.
Methods
A retrospective review was conducted of patients who underwent LSPSL for lumbar spinal stenosis between June 2020 and February 2022, with a minimum 1-year follow-up. Clinical outcomes were assessed using the visual analogue scale (VAS), Oswestry Disability Index (ODI), European quality of life - 5 dimensions - 5 levels (EQ-5D-5L), European quality of life VAS (EQ-VAS), and modified MacNab criteria. One year after surgery, radiological outcomes were evaluated through computed tomography scan to assess the spinolaminar bone union rate and patterns.
Results
Out of 38 patients, data from 30 patients (male:female = 17:13) and 36 surgical levels were analyzed. The mean age was 67 years (range, 46–88 years). The preoperative mean leg VAS score and ODI significantly decreased at the 1-year postoperative follow-up (leg VAS, 6.6–3.8; p = 0.001; ODI, 19.3–10.9, p = 0.006). The EQ-5D-5L index and EQ-VAS also significantly improved (0.52–0.77, p < 0.001; 50.8–67.1, p = 0.018; respectively). Using the modified MacNab criteria, the study reported excellent and good outcomes in 80% of patients at the 1-year follow-up, with no serious complications observed. The overall spinolaminar union rate was 77.8% (complete union, 58.3%; partial union 19.4%).
Conclusion
LSPSL was found to provide favorable clinical outcomes and a satisfactory rate of posterior bony structure restoration for lumbar spinal stenosis, making it a feasible treatment option.
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