Efficacy of Unilateral Biportal Endoscopic Decompression in Lumbar Foraminal Stenosis

Ji-Min Lee; Young-Ha Woo; Seong-Ho Yoo; Young-Jun Kim; Jin-Hyuk Seo; Hyuk Bae

Efficacy of Unilateral Biportal Endoscopic Decompression in Lumbar Foraminal Stenosis

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요추 추간공 협착증에서 일측성 양방향 내시경적 측부 추간공 감압술의 효과

Type: Academic journal

Author: Ji-Min Lee (부산 대동병원) Young-Ha Woo (부산 대동병원) Seong-Ho Yoo (부산 대동병원) Young-Jun Kim (부산 대동병원) Jin-Hyuk Seo (부산 대동병원) Hyuk Bae (부산 대동병원)

Journal: THE KOREAN ORTHOPAEDIC ASSOCIATION JOURNAL OF THE KOREAN ORTHOPAEDIC ASSOCIATION Vol.55 No.5 KCI Accredited Journals

Published: 2020.10

Pages: 411 - 417 (7page)

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Efficacy of Unilateral Biportal Endoscopic Decompression in Lumbar Foraminal Stenosis

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Purpose: This paper reports the short-term clinical and radiological results of unilateral biportal endoscopic decompression (UBE) to prove its efficacy.
Materials and Methods: Twenty patients who received unilateral biportal endoscopic far-lateral decompression (UBEFLD) were analyzed statistically using the visual analogue scale (VAS), modified Macnab criteria and Oswestry Disability Index (ODI) clinically. Radiologically, their intervertebral angle (IVA), percentage slip, disc height index (DHI) and foraminal height index (FHI) were analyzed pre- and postoperatively.
Results: The VAS scores were 6.20 preoperatively, which improved to 2.05, 1.75 and 1.45 at postoperative one month, three months and one year, respectively (p<0.001). The modified macnab criteria in both the good or excellent category was 70.0%, 80.0% and 85.0% at postoperative one month, three months and one year, respectively (p=0.034). The ODI improved from 59.8% preoperatively to 35.8%, 33.2%, and 17.1% at postoperative one month, three months, and one year, respectively (p<0.001). The IVA was increased 0.40±0.88 after a surgery (p=0.057). Percentage slip was increased 0.19% after surgery (p=0.134). The DHI changed from 0.49 preoperatively to 0.62 postoperatively (p=0.359), and the FHI changed from 0.71 preoperatively to 0.79 postoperatively (p<0.001).
Conclusion: UBEFLD displayed satisfactory results. Such a result highlights the potential of UBEFLD as an excellent alternative to spinal fusion or microscopic surgery.

#lumbar spine #foraminal stenosis #unilateral biportal decompression #efficacy #요추, 추간공 협착증 #일측성 양방향 추간공 내시경 감압술 #효과

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Ahn JS / 2018 / Extraforaminal approach of biportal endoscopic spinal surgery : a new endoscopic technique for transforaminal decompression and discectomy / J Neurosurg Spine 28:492~498

Phan K / 2017 / Treatment of lumbar spinal stenosis by microscopic unilateral laminectomy for bilateral decompression : a technical note / Orthop Surg 9:241~246

Cavuşoğlu H / 2007 / Midterm outcome after unilateral approach for bilateral decompression of lumbar spinal stenosis : 5-year prospective study / Eur Spine J 16:2133~2142

최대정 / 2018 / Biportal Endoscopic Spine Surgery for Various Foraminal Lesions at the Lumbosacral Lesion / Asian Spine Journal 12(3):569~573

Kim JE / 2018 / Bi-portal arthroscopic spinal surgery(BASS)with 30° arthroscopy for far lateral approach of L5-S1-technical note / J Orthop 15:354~358

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