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Table 3 Comparison of radiological outcomes between standalone and combined OLIF

From: Standalone oblique lateral interbody fusion vs. combined with percutaneous pedicle screw in spondylolisthesis

 

OLIF+fixation

Standalone OLIF

P

ADH

 Pre-op

4.9 ± 1.6

6.8 ± 2.5

< 0.001

 Post-op 1 week

12.8 ± 1.2

12.7 ± 0.7

0.737

 Post-op 3 months

12.8 ± 1.5

12.6 ± 0.5

0.991

 Post-op 2 years

12.5 ± 1.2

12.0 ± 0.4

0.055

PDH

 Pre-op

4.1 ± 2.0

6.1 ± 2.3

0.010

 Post-op 1 week

8.7 ± 1.7

10.2 ± 1.2

< 0.001

 Post-op 3 months

8.6 ± 1.7

10.1 ± 1.0

< 0.001

 Post-op 2 years

8.3 ± 1.6

9.9 ± 1.2

< 0.001

FH

 Pre-op

12.7 ± 3.7

14.5 ± 1.9

0.009

 Post-op 1 week

16.6 ± 4.0

18.7 ± 3.2

0.014

 Post-op 3 months

16.6 ± 4.0

18.4 ± 3.3

0.032

 Post-op 2 years

16.4 ± 3.9

17.8 ± 3.3

0.111

FW

 Pre-op

7.4 ± 2.3

8.6 ± 1.7

0.017

 Post-op 1 week

9.6 ± 1.5

10.8 ± 1.8

0.018

 Post-op 3 months

9.4 ± 2.2

10.7 ± 1.8

0.011

 Post-op 2 years

9.4 ± 2.2

10.6 ± 1.7

0.016

Fusion rate at 3 months

  

0.669

 GradeI

35 (85.4%)

27 (84.4%)

 

 Grade II

4 (9.8%)

2 (6.3%)

 

 Grade III

2 (4.9%)

3 (9.4%)

 

 Grade IV

0

0

 

Fusion rate at 2 years

  

0.066

 Grade I

41 (100.0%)

30 (93.8%)

 

 Grade II

0

2 (6.2%)

 

 Grade III

0

0

 

 Grade IV

0

0

 
  1. ADH anterior disc height, PDH posterior disc height, FH foraminal height, FW foraminal width