ArticleNeurospine2021
Unilateral Biportal Endoscopy for Decompression of Extraforaminal Stenosis at the Lumbosacral Junction: Surgical Techniques and Clinical Outcomes.
Article in Neurospine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 1 of them a synthesis that pooled it.
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Who cites it
39 citing papers in PubMed, 1 synthesis or guideline pooled it, 65 citations in OpenAlex.
- Comparative efficacy of unilateral biportal endoscopy and micro-endoscopic discectomy in the treatment of degenerative lumbar spinal stenosis: a systematic review and meta-analysis.Journal of orthopaedic surgery and research · 2023Pooled it
- Delta large-channel endoscopy versus unilateral biportal endoscopy decompressive laminectomy for lumbar spinal stenosis: a prospective randomized controlled trial.Journal of orthopaedic surgery and research · 2025Trial
- Application of unilateral biportal endoscopy in lumbar double crush syndrome: a retrospective study and literature-based classification.BMC surgery · 2026Review
- Unilateral Biportal Endoscopic en Bloc Resection of the Lumbosacral Ligament Following Bony Release: A Technique Aiming to Reduce Dorsal Root Ganglion Manipulation.Journal of clinical medicine · 2026Article
- Real-Time Location System Assessment of Early Postoperative Recovery After Lumbar Decompression According to Surgical Approach.Neurospine · 2026Article
- A novel C-Arm-free navigation-guided endoscopy-assisted extraforaminal decompression for L5 radiculopathy with far-out syndrome: a surgical technical note.Journal of spine surgery (Hong Kong) · 2026Article
- Anterior Decompression of L5 Nerve Root for Far-Out Syndrome Due to Anterolateral Vertebral Osteophyte Formation: 2 Case Reports and Literature Review.International journal of spine surgery · 2026Article
- O-arm navigation-guided uni-portal non-coaxial spinal endoscopic surgery for the precise treatment of far-out syndrome-a case report and literature review.Frontiers in surgery · 2026Article
- Correlation Between Postoperative Changes in Imaging Parameters and Clinical Outcomes After Unilateral Biportal Endoscopic Decompression for Single-Level Lumbar Spinal Stenosis.Journal of pain research · 2026Article
- A retrospective study on the effects of unilateral biportal endoscopic lumbar interbody fusion on functional recovery in patients undergoing single-level lumbar interbody fusion.Translational neuroscience · 2026Article
- Full-endoscopic Spine Surgery for the Treatment of Far-out Syndrome: A Case Series.Neurologia medico-chirurgica · 2025Article
- Comparative analysis of the efficacy and functional recovery of unilateral biportal endoscopy-assisted lumbar interbody fusion for the treatment of lumbar disc herniation.Scientific reports · 2025Article
- Clinical outcomes of unilateral biportal endoscopic discectomy for the treatment of far lateral lumbar disc herniation: a retrospective comparative study.BMC surgery · 2025Article
- [Unilateral biportal endoscopy-assisted decompression strategy for lateral lumbar spinal stenosis].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2025Article
- How I do it: minimally invasive surgical decompression for lumbosacral extraforaminal stenosis (Far-Out Syndrome).Acta neurochirurgica · 2025Article
- Risk factors for perioperative complications following unilateral biportal endoscopic spine surgery.Wideochirurgia i inne techniki maloinwazyjne = Videosurgery and other miniinvasive techniques · 2025Article
- Biportal endoscopic non-facetectomy foraminal decompression and discectomy (ligamentum flavum turn-down technique).Asian spine journal · 2025Article
- Unilateral biportal endoscopy: review and detailed surgical approach to extraforaminal approach.EFORT open reviews · 2025Review
- Open Midline Decompression with Ligament Reconstruction for Multiple-Level Spinal Stenosis in Elderly Patients.NeuroSci · 2025Article
- Percutaneous paravertebral endoscopic decompression for the treatment of far-out syndrome involving the L5 nerve root: technical report and preliminary results.BMC musculoskeletal disorders · 2025Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThe aims of this study were to describe the unilateral biportal endoscopic (UBE) technique for decompression of extraforaminal stenosis at L5-S1 and evaluate 1-year clinical outcomes. Especially, we evaluated compression factors of extraforaminal stenosis at L5-S1 and described the surgical technique for decompression in detail.
methodsThirty-five patients who underwent UBE decompression for extraforaminal stenosis at L5-S1 between March 2018 and February 2019 were enrolled. Clinical results were analyzed using the MacNab criteria, the visual analogue scale (VAS) for back and leg pain, and the Oswestry Disability Index (ODI). Compression factors evaluated pseudoarthrosis within the transverse process of L5 and ala of sacrum, disc bulging with or without osteophytes, and the thickened lumbosacral and extraforaminal ligament.
resultsThe mean back VAS was 3.7 ± 1.8 before surgery, which dropped to 2.3 ± 0.8 at 1-year postoperative follow-up (p < 0.001). There was a significant drop in postoperative mean VAS for leg pain from 7.2 ± 1.1 to 2.3 ± 1.2 at 1 year (p < 0.001). The ODI was 61.5 before surgery and 28.6 (p < 0.001). Pseudoarthrosis between the transverse process and the ala was noted in all cases (35 of 35, 100%). Pure disc bulging was seen in 12 patients (34.3%), and disc bulging with osteophytes was demonstrated in 23 patients. The thickened lumbosacral and extraforaminal ligament were identified in 19 cases (51.4%). No complications occurred in any of the patients.
conclusionIn the current study, good surgical outcomes without complications were achieved after UBE decompression for extraforaminal stenosis at L5-S1.
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