Groups | Anterior height of vertebral body | VAS score | ||
---|---|---|---|---|

Preoperative | Postoperative | Preoperative | Postoperative | |

Unilateral | 19.6±6.5 | 23.7±5.3 ^{a} | 8.2±2.1 | 2.2±1.6 ^{a} |

Bilateral | 19.2±6.1 | 22.9±5.1^{ab} | 8.5±2.5 | 2.2±1.3 ^{ab} |

The corresponding

*p*-values of a1,^{a}2,^{a}3 and^{a}4 are 0.036, 0.037, 0.002 and 0.001; The corresponding*P*-values of^{b}1 and^{b}2 are 0.108 and 0.065.^{a}Compared with preoperatively, the difference was statistically significant (*p*<0.05);^{b}compared with the unilateral group, the difference was not statistically significant (*p*>0.05)