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Table 2 Comparison of parameters between the L4 IS group and the L5 IS group (After age-matched analysis)

From: Straighter low lumbar curvature in isthmic spondylolisthesis at L4

Parameter Isthmus Spondylolisthesis Test Result P Value
L4 L5
PI(°) 58.2 ± 1.8 59.4 ± 1.2 F = 0.3 0.563
PT(°) 22.8 ± 1.4 20.0 ± 0.9 F = 2.6 0.107
SS(°) 35.8 ± 1.6 39.8 ± 1.1 F = 4.2 0.052
LL(°) 44.7 ± 2.1 48.8 ± 1.4 F = 2.6 0.112
LLL(°) 26.7 ± 1.4 31.0 ± 0.9 F = 6.5 0.012*
L5I(°) 30.5 ± 2.2 30.4 ± 1.5 F = 0 0.945
LSK(°) 106.6 ± 2.3 104.8 ± 1.6 F = 0.4 0.574
SR(%) 25.5 ± 1.6 25.1 ± 1.1 F = 0.1 0.83
DDG 6.3 ± 0.2 5.9 ± 0.2 F = 2.4 0.126
ODI 48.8 ± 2.8 48.6 ± 1.8 F = 0 0.942
  1. Data are presented as number of patients or mean ± SD. BMI Body mass index; PI Pelvic incidence; PT Pelvic tilt; SS Sacral slope; LL Lumbar lordosis; LLL Lower lumbar lordosis; L5 I L5 incidence; LSA Lumbosacral angle; SR Slippage rate; DDG Disc degeneration grade; ODI Oswestry Disability Index
  2. *Statistically significant (P < 0.05)