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Table 2 Changes in pre- and postoperative radiographic parameters pre-operative and postoperative data

From: Direct reduction of high-grade lumbosacral spondylolisthesis with anterior cantilever technique - surgical technique note and preliminary results

 

Pre-operative (n = 11)

Postoperative (n = 11)

p value

Local parameters

 Slip percentage

60.0

(53.0, 62.0)

30.0

(23.0, 36.0)

0.003**

 Dubousset’s lumbosacral angle

84.1

(75.6, 92.3)

97.9

(92.5, 111.4)

0.003**

Pelvic parameters

 Pelvic tilt

24.2

(22.2, 30.5)

25.4

(15.8, 30.4)

0.131

 Pelvic incidence

62.1

(53.1, 80.8)

64.9

(52.1, 81.4)

0.059

 Sacral slope

32.3

(30.4, 49.1)

41.9

(35.9, 52.2)

0.091

Spinal parameters

 LL

−49.4

(−70.3, −34.7)

−57.7

(−70.0, −47.1)

0.013*

 PI-LL mismatch

16.0

(10.0, 26.3)

9.9

(0.0, 19.0)

0.021*

 SVA (mm)

36.9

(18.3, 59.8)

23.6

(0.1, 54.1)

0.213

Wilcoxon signed rank, median (IQR). *P < 0.05, **P < 0.01

  1. Abbreviations: LL Lumbar Lordosis; PI Pelvic Incidence.; SVA sagittal vertical axis