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Related Experiment Video

Updated: May 4, 2026

Author Spotlight: Scope of LE-ULBD as a Safe, Effective, and Minimally Invasive Approach to Treat Lumbar Spinal Stenosis
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Bilateral decompression using a unilateral pedicle construct for lumbar stenosis.

Lu Mao1, Jie Zhao, Ke-Rong Dai

  • 1Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, 639 Zhizaoju Rd, Shanghai, 200011, China.

International Orthopaedics
|December 17, 2013
PubMed
Summary
This summary is machine-generated.

Unilateral pedicle screw fixation effectively treats two-level lumbar stenosis with instability. This less invasive approach maintains lumbar lordosis and disc height, offering significant clinical improvement.

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Area of Science:

  • Neurosurgery
  • Orthopedic Surgery
  • Spinal Surgery

Background:

  • Lumbar spinal stenosis with instability presents a significant clinical challenge.
  • Traditional surgical approaches may involve extensive bilateral exposure.
  • Minimally invasive techniques are increasingly explored for spinal decompression and fusion.

Purpose of the Study:

  • To evaluate the efficacy of bilateral decompression using a unilateral approach with unilateral pedicle screw fixation.
  • To assess this technique in patients with two-level lumbar stenosis and instability.

Main Methods:

  • A cohort of 98 patients with two-level lumbar stenosis and instability underwent unilateral pedicle screw fixation and two-level transforaminal lumbar interbody fusion (TLIF).
  • Clinical outcomes were assessed using Visual Analog Scale (VAS) and Oswestry Disability Index (ODI) scores.
  • Radiological evaluation included fusion status, disc space height, and lumbar lordotic angle.

Main Results:

  • Significant improvements in ODI scores and VAS pain scores were observed postoperatively.
  • Radiological analysis revealed increased disc space height and lumbar lordotic angle at final follow-up.
  • All patients achieved successful spinal fusion with no complications reported.

Conclusions:

  • Bilateral decompression via a unilateral approach with unilateral pedicle screw fixation is an effective surgical strategy.
  • This technique successfully maintains lumbar lordosis and disc space height.
  • It represents a less invasive alternative compared to bilateral constructs for treating lumbar stenosis with instability.