Table 2 Radiographic outcomes between groups D and F

Operated segments

0.40

L3–L4 (n)

1

0

L4–L5 (n)

16

21

L5–S1 (n)

1

3

Preoperative disc height (mm)

5.3 ± 1.6

4.8 ± 1.8

0.42

Preoperative dynamic Δslip (mm)

2.1 ± 2.0

1.7 ± 1.3

0.72

Preoperative percentage of slip (%)

26.2 ± 1.1

27.0 ± 2.0

0.27

Preoperative amount of slippage (mm)

10.0 ± 0.8

10.3 ± 1.2

0.69

Postoperative amount of slippage (mm)

10.4 ± 0.9

6.2 ± 2.7

< 0.01

Fusion rate (%)

-

83.3 (20/24)

-