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Updated: Jan 17, 2026

Author Spotlight: Scope of LE-ULBD as a Safe, Effective, and Minimally Invasive Approach to Treat Lumbar Spinal Stenosis
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Equivalent Patient-Reported Clinical Outcomes Between Single-Level and Multilevel Biportal Endoscopic Decompression

Ju Eun Kim1, Eugene J Park, Daniel K Park

  • 1From Baroseomyeon Hospital, Busan, Korea (Dr. Kim); Department of Orthopedic Surgery, Kyungpook National University Hospital, Kyungpook National University School of Medicine (Dr. E. J. Park); and Midwest Orthopedics at RUSH Chicago, IL (Dr. D. K. Park).

Journal of the American Academy of Orthopaedic Surgeons. Global Research & Reviews
|September 16, 2025
PubMed
Summary
This summary is machine-generated.

Single-level and multilevel unilateral biportal endoscopic decompression offer similar long-term outcomes for lumbar spinal stenosis. This minimally invasive technique is effective for both single and multiple level decompression without increased complications.

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Area of Science:

  • Neurosurgery
  • Orthopedic Surgery
  • Minimally Invasive Spine Surgery

Background:

  • Unilateral biportal endoscopic (UBE) decompression is effective for lumbar spinal stenosis without instability.
  • Long-term clinical outcome data for UBE decompression are limited.
  • Direct comparisons between single-level and multilevel UBE decompression are lacking.

Purpose of the Study:

  • To compare the long-term clinical outcomes of single-level versus multilevel UBE decompression.
  • To evaluate the safety and efficacy of UBE decompression for degenerative lumbar spinal stenosis without instability.

Main Methods:

  • Retrospective study comparing 98 propensity-matched patients in single-level and multilevel UBE decompression groups.
  • All patients had a minimum 5-year follow-up.
  • Clinical outcomes assessed included Oswestry Disability Index (ODI), visual analog scale (VAS) for leg and back pain, time to ambulation, surgical time, and hospital stay.

Main Results:

  • Both single-level and multilevel UBE decompression significantly improved ODI and VAS scores (P < 0.001).
  • No significant differences in clinical outcomes, complication rates, or revision rates were observed between the single-level and multilevel groups at final follow-up.
  • Time to ambulation and length of hospital stay were longer in the multilevel decompression group.

Conclusions:

  • Long-term clinical outcomes, complication rates, and revision rates are comparable between single-level and multilevel UBE decompression for degenerative lumbar spinal stenosis without instability.
  • UBE decompression is a viable option for multilevel decompression when indicated, without compromising patient outcomes.
  • This technique offers a safe and effective minimally invasive approach for treating lumbar spinal stenosis.