Table 1 Comparison of parameters between the L4 IS group and the L5 IS group
From: Straighter low lumbar curvature in isthmic spondylolisthesis at L4
Parameter | Isthmus Spondylolisthesis | Test Result | P Value | |
|---|---|---|---|---|
L4 | L5 | |||
No. of patients | 44 | 95 | – | – |
Age in yrs | 58.5 ± 8.7 | 52.8 ± 10.1 | t = −3.232 | 0.002 * |
Sex (male/female) | 15/29 | 29/66 | χ2 = 0.177 | 0.674 |
BMI (kg/m2) | 25.1 ± 4.3 | 24.6 ± 3.5 | t = −0.640 | 0.523 |
Diabetes (yes/no) | 4/40 | 15/80 | χ2 = 1.143 | 0.285 |
Osteoporosis (yes/no) | 3/41 | 7/88 | χ2 = 0.014 | 0.907 |
PI(°) | 58.4 ± 9.5 | 59.3 ± 12.4 | t = 0.409 | 0.683 |
PT(°) | 22.6 ± 9.6 | 20.0 ± 8.8 | t = −1.616 | 0.108 |
SS(°) | 36.1 ± 9.8 | 39.7 ± 10.6 | t = 1.892 | 0.061 |
LL(°) | 45.5 ± 13.2 | 48.4 ± 13.5 | t = 1.190 | 0.236 |
LLL(°) | 27.1 ± 8.2 | 30.9 ± 9.3 | t = 2.326 | 0.021* |
L5I(°) | 29.9 ± 8.0 | 30.7 ± 13.0 | t = 0.285 | 0.776 |
LSK(°) | 106.8 ± 16.3 | 104.8 ± 14.5 | t = −0.726 | 0.496 |
SR(%) | 25.6 ± 7.3 | 25.1 ± 11.6 | t = − 0.309 | 0.758 |
DDG | 6.4 ± 1.5 | 5.9 ± 1.6 | t = −1.855 | 0.066 |
ODI | 50.1 ± 15.0 | 48.0 ± 15.1 | t = −0.624 | 0.534 |