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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)