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Table 4 Segmental changes in the height of the anterior end of the facet joint space before and after CeLFI insertion based on 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)

Left facet height change (mm)

Right facet height (mm)

Right facet height change (mm)

Before

After

Before

After

2nd (C3–4)

2.95

3.95

 + 1

2.04

6.07

4.03

3rd (C3–4)

1.51

3.15

 + 1.64

1.78

4.06

2.28

4th (C4–5)

1.65

4.45

 + 2.8

2.26

3.65

1.39

7th (C3–4)

1.85

5.26

 + 3.41

1.96

4.99

3.03

8th (C3–4)

1.41

3.97

 + 2.56

1.87

4.84

2.97

9th (C3–4)

1.71

5.36

 + 3.65

1.42

4.8

3.38

10th (C3–4)

1.7

4.35

 + 2.65

2.3

2.92

0.62

11th (C3–4)

1.1

3.6

 + 2.5

1.6

3.6

2

12th (C3–4)

2.3

3.8

 + 1.5

1.6

4.7

3.1

Mean (SD)

1.8 (± 0.54)

4.21 (± 0.73)

 + 2.41 (± 0.88)

1.87 (± 0.3)

4.4 (± 0.94)

 + 2.53 (± 1.6)

  1. Measurements (in mm) were performed on sagittal CT images
  2. CeLFI Cervical expandable facet implant, CT Computed tomography, SD Standard deviation
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X