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Table 4 Summary of non-surgical level X-ray results

From: The influence of L4–S1 Dynesys® dynamic stabilization versus fusion on lumbar motion and its relationship with lumbar degeneration: a retrospective study

 

PDS

Fusion

P

L1–2 ROM

 Preoperative

5.41 ± 2.31

5.98 ± 1.86

0.32

 Postoperative 2 years

6.91 ± 3.14

6.82 ± 3.74

0.93

L2–3 ROM

 Preoperative

7.03 ± 2.72

7.28 ± 1.75

0.70

 Postoperative 2 years

7.53 ± 2.87

7.34 ± 2.50

0.80

L3–4 ROM

 Preoperative

7.51 ± 3.25

8.04 ± 2.90*

0.53

 Postoperative 2 years

9.10 ± 3.03

11.06 ± 5.20#

<0.05

L1–2 disc height

 Preoperative

7.47 ± 1.54

7.52 ± 1.21

0.24

 Postoperative 2 years

7.83 ± 1.56

7.75 ± 1.62

0.74

L2–3 disc height

 Preoperative

8.95 ± 1.29

8.79 ± 1.21

0.73

 Postoperative 2 years

9.16 ± 1.24

8.94 ± 1.07

0.36

L3–4 disc height

 Preoperative

9.88 ± 2.09

9.92 ± 2.26*

0.46

 Postoperative 2 years

9.34 ± 1.53

8.12 ± 1.38#

<0.05

  1. P was calculated with independent sample t test. Between preoperative and postoperative, * and # denote significant difference