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Related Concept Videos

Herniated Intervertebral Disc l: Introduction01:29

Herniated Intervertebral Disc l: Introduction

Intervertebral disc herniation refers to the displacement of the nucleus pulposus (the gel-like inner core of the disc) through a tear or weakened area in the annulus fibrosus (the outer fibrous ring). The displaced disc material extends beyond the normal boundaries of the disc space and may compress or irritate nearby spinal nerve roots or, less commonly, the spinal cord.Etiology and Risk FactorsHerniation commonly results from degeneration, in which aging reduces disc hydration and...

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Three-dimensional Navigation-guided, Prone, Single-position, Lateral Lumbar Interbody Fusion Technique
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Lumbar Stabilization with Interspinous Process Devices for Lumbar Spinal Canal Stenosis.

Taisuke Yoshinaga1,2, Kyongsong Kim3, Takato Tajiri1,2

  • 1Department of Neurosurgery, Kushiro Rosai Hospital.

Neurologia Medico-Chirurgica
|August 13, 2025
PubMed
Summary

Lumbar stabilization surgery using an interspinous spacer significantly improved pain and disability in patients with lumbar spinal canal stenosis. Radiological outcomes were favorable, with decreased surgical level angle, indicating effective spinal stabilization.

Keywords:
interspinous process devicelumbar canal stenosislumbar stabilizationthe swift system

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Area of Science:

  • Orthopedic Surgery
  • Spinal Surgery
  • Neurosurgery

Background:

  • Lumbar spinal canal stenosis (LSCS) is a common condition causing pain and disability.
  • Surgical intervention is often necessary for severe LSCS.
  • Minimally invasive techniques are sought to improve outcomes and reduce risks.

Purpose of the Study:

  • To evaluate the treatment outcomes of LSCS patients undergoing lumbar stabilization surgery.
  • To assess the radiological effects of this surgery at least 1 year postoperatively.
  • To determine the efficacy and safety of using a titanium alloy interspinous spacer.

Main Methods:

  • Forty LSCS patients received lumbar stabilization with a titanium alloy interspinous spacer.
  • Surgical outcomes were assessed using pain scales (Numerical Rating Scale), disability (Roland-Morris Disability Questionnaire), and functional scores (Japanese Orthopedic Association).
  • Radiological evaluation included measurements of the dural sac area and surgical level angle in neutral and extended positions.

Main Results:

  • Significant improvements in pain, disability, and function were observed at 6 and 12 months post-surgery.
  • No significant change in dural sac area was noted.
  • A marked decrease in the surgical level angle was observed, indicating successful stabilization.

Conclusions:

  • Lumbar stabilization surgery with an interspinous spacer is effective for treating LSCS.
  • The procedure offers radiological benefits, including improved spinal alignment.
  • This minimally invasive approach avoids extensive decompression and can be performed under local anesthesia for high-risk patients.