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Table 5 Comparison according to the SDSG grade at 12 months

From: Does minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) influence functional outcomes and spinopelvic parameters in isthmic spondylolisthesis?

Parameters SDSG Test§ p value
SDSG 2 (N = 9) SDSG 3 (N = 15) (Sig.)
Visual Analogue Scale (VAS) for back
Mean ± SD 1.44 ± 0.72 2 ± 0.92 − 1.462 0.144
Median (range) 1 (1–3) 2 (1–3)
Visual Analogue Scale (VAS) for leg
Mean ± SD 0.77 ± 0.44 1.13 ± 1.99 − 0.341 0.733
Median (range) 1 (0–1) 1 (0–8)  
Oswestry Disability Index (ODI)
Mean ± SD 13.78 ± 2.108 16.87 ± 12.495 − 0.272 0.786
Median (range) 14 (11–17) 15 (10–61)  
Pelvic tilt (PT)
Mean ± SD 17.02 ± 2.99 21.53 ± 3.95 − 2.534 0.011
Median (range) 16 (12.30–22.20) 21.90 (14–27) (S)
Sacral slope (SS)
Mean ± SD 35.4778 ± 2.28844 45.8733 ± 4.06966 − 8.006 < 0.001
Median (range) 35.8(32.1–40) 45 (39.7–52.9) (HS)
Lumbar lordosis (LL)
Mean ± SD 52.46 ± 4.95 61.22 ± 5.64 − 3.139 0.002
Median (range) 50 (47.40–59) 60 (50.80–68.90) (S)
Mismatch
Mean ± SD 5.22 ± 3.31 6.80 ± 2.76 − 1.283 0.2
Median (range) 4.60 (1.60–9.50) 7.20 (0.10–9.90)  
L1–L4
Mean ± SD 23 ± 6.09 30.4 ± 5.32 − 2.419 0.016
Median (range) 20 (17– 32.2) 29.8 (22.3–38.6) (S)
L4–S1
Mean ± SD 37.44 ± 3.19 39.74 ± 4.64 − 1.404 0.16
Median (range) 38.10 (33.70–43.30) 41.90 (31.20–45.20)  
Segmental lordosis (SL)
Mean ± SD 20.62 ± 3.01 20.74 ± 8 − 1.343 0.179
Median (range) 21.90 (14.60–23.60) 17.30 (13.90–37)  
  1. § Mann–Whitney U test, p < 0.05 is significant. Sig.: Significance