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Table 2 Absolute and relative thickness of LF in the LDH, SLSS and DLSS groups

From: The expression of P16 and S100 associated with elastin degradation and fibrosis of the Ligamentum Flavum hypertrophy

  LDH SLSS DLSS F p
LF thickness Absolute (mm) ± SD 2.886 ± 0.592 4.924 ± 0.843 5.658 ± 0.793 73.270 < 0.01
Relative (%) ± SD 21.330 ± 5.532 36.520 ± 8.686 43.107 ± 7.996 44.024 < 0.01
  1. LF ligamentum flavum, LDH lumbar disc herniation, DLSS double-segment lumbar spinal stenosis, SLSS single-segment lumbar spinal stenosis
  2. Relative thickness formula: (LF thickness/lumbar spinal canal oblique diameter) × 100; Means in percents ± standard deviations