Table 3 Comparison of the ROM of three groups with and without artificial vertebral body (unit: degree)

Flexion

0.358

1.517

324.16%

2.829

3.896

37.72%

2.827

2.964

4.86%

Extension

0.360

1.521

322.37%

2.771

3.843

38.66%

2.770

2.908

4.99%

Bending to the left

0.568

0.571

0.52%

2.271

2.288

0.76%

2.272

2.286

0.58%

Bending to the right

0.568

0.571

0.50%

2.278

2.294

0.73%

2.279

2.293

0.60%

Rotation to the left

1.002

1.403

39.97%

5.638

5.976

6.00%

5.655

5.747

1.63%

Rotation to the right

1.002

1.403

39.97%

5.657

5.993

5.95%

5.673

5.764

1.60%