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Adjacent segment disease (ASD) is one of the most debated issues in spine surgery. The condition “adjacent segment disease” (ASD) refers to the degeneration of mobile spinal segments located above or below a fused spinal segment, typically following spinal fusion or other spine procedures. The incidence of ASD after posterior lumbar fusion surgery ranges from 8.5% to 69.4%. Factors significantly associated with a higher incidence of ASD include older age, higher BMI, history of smoking and hypertension, preoperative adjacent disc degeneration, long-segment fusion, superior facet violation, high lumbosacral joint angle, and both pre- and postoperative L1–S1 sagittal vertical axis (SVA), postoperative lumbar lordosis (LL), and preoperative pelvic incidence (PI) [1–6].

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Biportal Endoscopic Lumbar Fusion Extension for Symptomatic Adjacent Segment Disease

  • 章节

  • 发表日期：

    2025年

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  • Ji Soo Ha,
  • Kanghyon Sung,
  • Chang-Wook Kim,
  • Do-Hyoung Kim,
  • Rajendra Sakhrekar

摘要

Adjacent segment disease (ASD) is one of the most debated issues in spine surgery. The condition “adjacent segment disease” (ASD) refers to the degeneration of mobile spinal segments located above or below a fused spinal segment, typically following spinal fusion or other spine procedures. The incidence of ASD after posterior lumbar fusion surgery ranges from 8.5% to 69.4%. Factors significantly associated with a higher incidence of ASD include older age, higher BMI, history of smoking and hypertension, preoperative adjacent disc degeneration, long-segment fusion, superior facet violation, high lumbosacral joint angle, and both pre- and postoperative L1–S1 sagittal vertical axis (SVA), postoperative lumbar lordosis (LL), and preoperative pelvic incidence (PI) [1–6].