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Related Experiment Video

Updated: Feb 27, 2026

Multilevel Oblique Lumbar Interbody Fusion in Degenerative Lumbar Disc Disease with Instability
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Adjacent instability after instrumented lumbar fusion.

Wen-Jer Chen1, Po-Liang Lai, Lih-Huei Chen

  • 1Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Taipei. chenwenj@cgmh.org.tw

Chang Gung Medical Journal
|February 10, 2004
PubMed
Summary

Adjacent instability is a common complication following lumbar spinal fusion surgery. Proper surgical planning and technique are crucial for prevention and successful revision surgery.

Area of Science:

  • Spine surgery
  • Orthopedic research
  • Biomechanical engineering

Background:

  • Pedicle screw instrumentation has significantly enhanced spinal fusion outcomes for lumbar spondylolisthesis.
  • Lumbar spinal fusion is a primary treatment for lumbar spondylolisthesis.

Purpose of the Study:

  • To review the risk factors and surgical treatment of adjacent instability following instrumented lumbar spine fusion.
  • To highlight the importance of preoperative planning and surgical technique in preventing adjacent instability.

Main Methods:

  • Literature review
  • Analysis of author experience
  • Clinical case review

Main Results:

  • Adjacent instability, defined as the breakdown of a neighboring unfixed motion segment, is a frequent complication of instrumented lumbar spines.

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  • Risk factors for adjacent instability were identified through literature review and author experience.

    • Conclusions:

    • Preventing adjacent instability requires meticulous preoperative planning and complete surgical procedures.
    • Revision surgery for adjacent instability can yield satisfactory outcomes with careful surgical techniques.