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Table 2 Radiographic parameters at different time points

From: Retrospective study on effectiveness of Activ L total disc replacement

 

Pre-op

1 month Post-op

1 year Post-op

3 years Post-op

F

P

LL

40.21 ± 2.60

37.07 ± 1.82

43.31 ± 2.10

44.41 ± 2.10

5.258

0.003

PI

49.79 ± 7.20

49.59 ± 7.14

50.34 ± 7.67

50.24 ± 7.48

2.161

0.107

PT

16.00 ± 8.30

15.24 ± 7.26

13.86 ± 7.03

14.86 ± 7.91

0.657

0.558

IL

18.66 ± 1.86

23.07 ± 1.07

25.41 ± 1.71

25.93 ± 1.69

19.728

< 0.001

SS

33.79 ± 1.92

34.35 ± 1.78

36.48 ± 1.66

35.38 ± 1.55

1.182

0.320

SL (L2–3)

0.41 ± 0.71

− 0.41 ± 0.66

− 0.21 ± 0.70

0.48 ± 0.67

2.105

0.116

SL (L3–4)

6.48 ± 1.03

5.62 ± 0.97

7.00 ± 1.09

7.41 ± 0.99

2.438

0.083

SL (L4–5)

16.52 ± 1.53

17.86 ± 1.40

20.35 ± 1.32

21.03 ± 1.33

7.768

< 0.001

SL (L5-S1)

19.10 ± 1.49

19.69 ± 1.07

20.79 ± 1.28

21.28 ± 1.23

1.421

0.250

  1. Pre-op pre-operative, Post-op post-operative, LL lumbar lordosis, PI pelvic incidence, PT pelvic tilt, IL index level lordosis, SS sacral slope, SL segmental lordosis