Variables | Group I | Group II | Group III |
---|---|---|---|
Ratio of central canal distance(%) | 51.2 ± 20.5 | 62.4 ± 17.1 | 76.5 ± 15.7 |
Ratio of interpedicular distance(%) | 123.1 ± 10.7 | 113.2 ± 7.8 | 104.2 ± 6.7 |
Ratio of spinal canal area(%) | 59.3 ± 23.6 | 69.0 ± 23.0 | 81.6 ± 21.0 |
Ratio of anterior height (%) | 66.0 ± 12.5 | 66.9 ± 10.6 | 70.0 ± 11.1 |