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Table 5 Height measurements of the facet joints (posterior and anterior ends) post-CeLFI insertion using CT imaging

From: Targeted anterior expansion of the cervical facet joints achieves indirect foraminal decompression and reduces spondylolisthesis via a posterior approach: a cadaveric study

Cadaver (implanted level)

Left facet height (mm)

Difference

Right facet height (mm)

Difference

Posterior end

Anterior end

 

Posterior end

Anterior end

 

2 (C3–4)

3.92

3.95

 + 0.03

4.38

6.07

 + 1.69

3 (C3–4)

3.13

3.15

 + 0.02

3.52

4.06

 + 0.54

4 (C4–5)

3.24

4.45

 + 1.21

2.35

3.65

 + 1.3

7 (C3–4)

5.39

5.26

-0.13

5.68

4.99

-0.69

8 (C3–4)

4.43

3.97

-0.46

2.62

4.84

 + 2.22

9 (C3–4)

4.0

5.36

 + 1.36

4.29

4.8

 + 0.51

10 (C3–4)

3.9

4.35

 + 0.45

2.54

2.92

 + 0.38

11 (C3–4)

3.6

3.6

0

0.2

3.6

 + 3.4

12 (C3–4)

3.5

3.8

 + 0.3

4.3

4.7

 + 0.4

Mean (± SD)

3.90 (0.688)

4.21 (0.732)

0.3089 (0.61)

3.32 (1.6)

4.4 (0.941)

1.083 (1.215)

P-value

  

0.37#

  

0.103#

  1. CeLFI, cervical expandable facet implant, CT Computed tomography, SD Standard deviation. The ( +) sign indicates more height gained in the anterior end of the facet joint space and the (-) sign indicates more height gained in the posterior end of the facet joint space