PITF(n = 21) | TTL(n = 24) | EVO(n = 23) | P1 | P2 | P3 | |
---|---|---|---|---|---|---|
Pre-operation | ||||||
Mean age, years | 52.90 ± 5.94 | 50.16 ± 9.67 | 49.04 ± 8.55 | 0.514 | 0.278 | 0.888 |
F/M gender | 9/12 | 10/14 | 8/15 | 0.861* | ||
Follow-up (Month) | 39.62 ± 10.36 | 34.75 ± 10.31 | 37.00 ± 9.04 | 0.234 | 0.657 | 0.718 |
BMI in kg/m2, mean | 24.99 ± 2.61 | 25.45 ± 2.19 | 25.64 ± 2.08 | 0.784 | 0.619 | 0.957 |
surgical segment L4–5/L5–S1 | 15/6 | 19/5 | 18/5 | 0.823* | ||
Disorder | 0.856* | |||||
Disc herniation | 3 | 5 | 6 | |||
Spinal stenosis | 14 | 13 | 13 | |||
Spondylolisthesis | 4 | 6 | 4 | |||
C-LSDI | 9.42 ± 3.52 | 9.45 ± 3.69 | 9.13 ± 2.78 | 0.978 | 0.756 | 0.734 |
Post-operation | ||||||
Goutallier Grade of upper segment (no. of levels) | < 0.001# | |||||
Grade 0 | 0 | 0 | 10(43.5%) | |||
Grade 1 | 0 | 10(41.7%) | 13(56.5%) | |||
Grade 2 | 7(33.3%) | 12(50%) | 0 | |||
Grade 3 | 14(66.7%) | 2(8.3%) | 0 | |||
Grade 4 | 0 | 0 | 0 | |||
Lumbar lordosis (°) | 56.22 ± 7.92 | 52.40 ± 7.16 | 54.18 ± 6.69 | 0.190 | 0.623 | 0.678 |
Operation time (min) | 145.71 ± 21.11 | 129.17 ± 8.80 | 128.26 ± 7.75 | 0.0004* | 0.0002* | 0.9717 |
Blood loss (ml) | 164.67 ± 17.99 | 144.58 ± 18.65 | 139.35 ± 19.79 | 0.002* | 0.0001* | 0.6096 |