Table 2.
Radiography outcomes.
| Group | n | S-intervertebral height (mm) | S-ROM (°) | U-intervertebral height (mm) | U-ROM (°) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pre | FFU | R (%) | Pre | FFU | R (%) | Pre | FFU | Pre | FFU | ||
| A | 27 | 9.7 ± 1.9 | 9.1 ± 2.0∗ | 94.5 ± 12.0 | 6.7 ± 2.7 | 5.2 ± 1.9† | 79.6 ± 19.4 | 11.2 ± 1.4 | 10.9 ± 1.5 | 6.0 ± 2.4 | 7.6 ± 3.2§ |
| B | 35 | 10.2 ± 2.0 | 8.0 ± 2.4∗ | 79.6 ± 20.0 | 6.1 ± 2.5 | 3.2 ± 1.8† | 54.0 ± 25.5 | 11.6 ± 2.3 | 11.5 ± 1.6 | 6.6 ± 2.6 | 8.4 ± 3.9§ |
| t | −0.95 | 1.92 | 3.44 | 0.96 | 4.05 | 4.34 | −0.85 | −1.50 | −0.88 | −0.80 | |
| P | 0.35 | 0.06 | 0.00 | 0.34 | 0.00 | 0.00 | 0.40 | 0.14 | 0.38 | 0.43 | |
Pre: preoperative; FFU: final follow-up; R: retention percentage. S-intervertebral height: surgical segment intervertebral height; S-ROM: surgical segment range of motion. U-intervertebral height: upper adjacent segment intervertebral height; U-ROM: upper adjacent segment range of motion. ∗T-test results showed the surgical segment intervertebral height in the two groups was statistically different between preoperation and the final follow-up (p < 0.05). †T-test results showed the surgical segment range of motion in the two groups was statistically different between preoperation and the final follow-up (p < 0.05). §T-test results showed the upper adjacent segment range of motion in the two groups was statistically different between preoperation and the final follow-up (p < 0.05).